Ysgol Gwyddorau Amgylcheddol a Naturiol

  1. 2005
  2. Effects of Erythrina poeppigiana pruning residues on soil organic matter in organic coffee plantations

    Payan Zelaya, F. A. (Awdur), Jones, D. (Goruchwylydd), Mai 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  3. The development of a quantum mechanical wavepacket description of intramolecular energy transfer.

    Evans, G. S. (Awdur), Macdonald, J. (Goruchwylydd), Ebr 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  4. Appraising farm business financial performance indicators.

    Florey, B. H. W. (Awdur), Bright, G. (Goruchwylydd), Maw 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  5. Assessment of water use efficiency in the flumen irrigation district, Aragon, Spain, through remote sensing and meteorological data: Repercussions and possibilities of new actions to improve water management strategies.

    Hernandez, J. G. R. (Awdur), Cratchley, R. (Goruchwylydd), Kay, J. (Goruchwylydd), Hollington, P. (Goruchwylydd), Isern, J. H. (Goruchwylydd) & Mora, R. D. (Goruchwylydd), Maw 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  6. Farmers' ecological and agronomic knowledge about the management of multistrata cocoa systems in Southern Cameroon.

    Nomo, B. (Awdur), Sinclair, F. (Goruchwylydd), Maw 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  7. Tandem Michael/aldol and Michael/Michael cyclisation reactions

    Brown, P. (Awdur), Murphy, P. (Goruchwylydd), Maw 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  8. Agroforestry in the buffer zone of Uganda's Budongo Forest.

    Kasolo, W. K. (Awdur), Hall, J. (Goruchwylydd), Ion 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  9. Improving the sustainability of cocoa farms in Ghana through utilization of native forest trees in agroforestry systems

    Anglaaere, L. (Awdur), McDonald, M. (Goruchwylydd), Ion 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  10. The effects of winter waterlogging on the growth, development and yield of UK varieties of winter wheat

    Dickin, E. (Awdur), Wright, D. (Goruchwylydd), Ion 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  11. A study of microbial communities and interactions in extremely acidic environments.

    Kimura, S. (Awdur), Johnson, B. (Goruchwylydd), 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  12. Customised TAA cations as counter ions in silicates and related systems

    Stiefvater-Thomas, B. (Awdur), Beckett, M. (Goruchwylydd), 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  13. Molecular phylogeography of the neotropical rattlesnake Crotalus durissus

    Quijada Mascareñas., J. A. (Awdur), Wüster, W. (Goruchwylydd), 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  14. Separation and characterisation of components from agricultural residues by novel methods

    Sun, X.-F. (Awdur), Baird, M. (Goruchwylydd) & Fowler, P. (Goruchwylydd), 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  15. The kinetics of GaAs MOCVD using in situ Laser Reflectance Monitoring

    Clayton, A. J. (Awdur), Irvine, S. (Goruchwylydd), 2005

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  16. 2004
  17. Effects of silvopastoral areas on dual-purpose cattle production at the semi-humid old agricultural frontier in Central Nicaragua

    Yamamoto, W. (Awdur), Ap Dewi, I. (Goruchwylydd), Rhag 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  18. Potential uses of red alder (Alnus rubra Bong) in silvopastoral systems

    Mmolotsi, R. M. (Awdur), Teklehaimanot, Z. (Goruchwylydd), Rhag 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  19. Combined dual wavelength interferometer and laser scattering monitor for multi-wafer MOCVD

    Bäckström, C. O. (Awdur), Medi 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  20. Molecular recognition of petides: basis for design and delivery of peptide therapeutics

    Ungurs, M. J. (Awdur), Payne, J. (Goruchwylydd), Medi 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  21. Proteomic analysis of neural differentiation in mouse embryonic stem cells

    Jones, R. (Awdur), Mcfarlane, R. (Goruchwylydd), Medi 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  22. The preparation and properties of composites reinforced with natural fibres

    Carpenter, J. E. P. (Awdur), Medi 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  23. Combining local and scientific knowledge about tree fodder evaluation and management in the hills of Nepal

    Subba, D. B. (Awdur), Sinclair, F. (Goruchwylydd), Awst 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  24. Using GFP-constructs to study the endomembrane system of Aspergillus nidulans

    Breakspear, A. (Awdur), Assinder, S. (Goruchwylydd), Awst 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  25. Approaches to methylcyclopropanes and a new route to methylenecyclopropanes

    Mohammed, H. M. (Awdur), Baird, M. (Goruchwylydd), Gorff 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  26. Characterizing the mechanical properties and behaviour of Gigantochloa scortechinii for structural applications

    Husain, H. (Awdur), Breese, M. (Goruchwylydd), Gorff 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  27. Decomposition of tree leaf litter and formation of soil organic matter

    Nason, M. A. (Awdur), Jones, D. (Goruchwylydd), Gorff 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  28. Enhanced phosphate cycling using Tithonia diversifolia

    Scrase, F. M. (Awdur), Jones, D. (Goruchwylydd), Meh 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  29. Reproductive compatibility and speciation in Celleporella hyalina Sensu Lato

    Wright, P. (Awdur), Hughes, R. (Goruchwylydd), Mai 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  30. The environmental basis of the resistance of wheat (Triticum aestivum L. cv. Brigadier) to Stagonospora nodorum Berk

    Nason, J. L. M. (Awdur), Farrar, J. (Goruchwylydd), Mai 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  31. Assessing the role of DON in semi natural and agricultural ecosystems

    Willett, V. B. (Awdur), Jones, D. (Goruchwylydd), Maw 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  32. The introduction of sustainable forest management certification in Greece

    Georgiadis, N. M. (Awdur), Cooper, R. (Goruchwylydd), Chwef 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  33. Understanding and improving the adoption of soil fertility interventions at the forest margin in Ghana

    Moss, C. M. (Awdur), Sinclair, F. (Goruchwylydd), Chwef 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  34. Synthetic studies towards analogues of ptilomycalin A

    Jones, S. M. (Awdur), Murphy, P. (Goruchwylydd), Ion 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  35. Vitellaria paradoxa in Uganda : population structures and reproductive characteristics

    Okullo, J. B. L. (Awdur), Hall, J. (Goruchwylydd), Ion 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  36. A study into the growth kinetics and properties of thin film zinc oxide deposited by MOCVD

    Lamb, D. A. (Awdur), Irvine, S. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  37. African bamboos: an appraisal with special reference to Oxytenanthera abyssinica, the savanna bamboo

    Inada, T. (Awdur), Hall, J. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  38. Characterisation of genes encoding peritrophins from the peritrophic matrix of Diptera : Drosophila and Glossina.

    Perkin, S. A. H. (Awdur), Lehane, M. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  39. Gas-sensitive resistors for detection of nitroaromatics

    Jones, B. J. S. (Awdur), Kalaji, M. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  40. Interactions between bacteria, enzymes and the sheep scab mite, Psoroptes ovis

    Hamilton, K. A. (Awdur), Lehane, M. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  41. Nitrogen donor complexes of molybdenum and tungsten and new routes to bis-1,2 & tris-1,2,3 substituted ferrocenes

    Fortune, K. M. (Awdur), Butler, I. (Goruchwylydd) & Baker, P. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  42. Studies in indene and indole synthesis

    Swinburn, S. J. (Awdur), Baird, M. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  43. Synthetic approaches to single enantiomers of mycolic acids

    Toschi, G. (Awdur), Baird, M. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  44. The cloning and characterisation of Schizosaccharomyces pombe rec20-144

    Pryce, D. (Awdur), Mcfarlane, R. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  45. Variation in aggressiveness and fungicide sensitivity in sexual and asexual progeny of Phytophthora infestans

    Earnshaw, D. M. D. S. (Awdur), Shattock, R. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  46. he Arabidopsis extensin gene at Ext1: studies on protein function and gene regulation

    Brown, K. (Awdur), Shirsat, A. (Goruchwylydd), 2004

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  47. 2003
  48. Maize and soybean intercropping in Nepal

    Prasad, R. B. (Awdur), Brook, R. (Goruchwylydd), Rhag 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  49. Gum Arabic studies in Tanzania: Production, utilization and economic potentials.

    Makonda, F. B. S. (Awdur), Bright, G. (Goruchwylydd), Tach 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  50. Transplanting sorghum and pearl millet- a key to risk management in semi-arid areas

    Mottram, A. (Awdur), Tach 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  51. Mona maritime trail llwybr Mon a mor

    Pritchard-Wallis, D. (Awdur), Morris, B. (Goruchwylydd), Hyd 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  52. Characterisation of the acetate non-utilising mutant 1 of Arabidopsis.

    Turner, J. E. (Awdur), Hooks, M. (Goruchwylydd), Medi 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  53. Localisation and interactions of adenomatous polyposis coli and Beta-catenin in epithelial and colorectal cancer cells

    Davies, M. L. (Awdur), Wakeman, J. A. (Goruchwylydd), Medi 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  54. Development of optical fibre devices for distributed monitoring and point-sensing applications

    Marsh, D. H. (Awdur), Kalaji, M. (Goruchwylydd), Awst 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  55. Treatment of Cr (VI) effluents using electroprecipitation

    Lascombe, E. (Awdur), Kalaji, M. (Goruchwylydd), Awst 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  56. A comparison of methods for selecting untagged animals for breeding purposes

    Parkes, S. J. (Awdur), Ap Dewi, I. (Goruchwylydd), Meh 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  57. A study of neosporosis in cattle and sheep in Ireland

    Ferris, J. F. (Awdur), Lehane, M. (Goruchwylydd), Meh 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  58. Competitive interactions between Coffea arabica L. and fast-growing timber shade trees

    van Kanten, R. F. (Awdur), Sinclair, F. (Goruchwylydd), Meh 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  59. Hydrocarbon-degradation by bacteria from Antarctica

    Stallwood, B. (Awdur), Williams, P. (Goruchwylydd), Meh 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  60. Biology of interspecies Wolbachia infections

    Srimurni K., E. (Awdur), Braig, H. (Goruchwylydd), Ebr 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  61. Kinetics of the wood-acetic anhydride reaction

    Dunningham, E. A. (Awdur), Ebr 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  62. The removal of linear alkylbenzene sulphonate (LAS) in constructed wetlands

    Thomas, R. (Awdur), Freeman, C. (Goruchwylydd), Maw 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  63. Laser-fibre system for in situ stress monitoring of thin films

    Barrioz, V. (Awdur), Irvine, S. (Goruchwylydd), Chwef 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  64. Improving fallow productivity in the forest and forest-savanna transition of Ghana : a socio-economic analysis of livelihoods and technologies

    Darko Obiri, B. (Awdur), Bright, G. (Goruchwylydd), Ion 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  65. Acclimation of cotton (Gossypium) to abiotic stress

    Armeanu, K. (Awdur), Gorham, J. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  66. Aluminium tolerance in Brachiaria decumbens and Brachiaria ruzizenis

    Grundy, S. (Awdur), Godbold, D. (Goruchwylydd) & Jones, D. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  67. An in vitro and in vivo study of the mechanical stress-controlling region of the extA extensin gene promoter from Brassica napus.

    Thomson, H. (Awdur), Shirsat, A. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  68. Anti-atherogenic effects of Schistosoma mansoni infection : modulation of host platelets and serum cholesterol

    Stanley, R. G. (Awdur), Doenhoff, M. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  69. Approaches to single enantiomers of cyclopropanes

    Bromley, G. (Awdur), Baird, M. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  70. Cryptic speciation and biogeography in Indomalayan pitvipers (Trimeresurus)

    Sanders, K. L. (Awdur), Malhotra, A. (Goruchwylydd) & Thorpe, R. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  71. Decay resistance of modified wood

    Farahani, M. R. (Awdur), Hill, C. (Goruchwylydd) & Hale, M. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  72. Incorporating local knowledge in participatory development of soil and water management interventions in the middle hills of Nepal

    Shresta, P. K. (Awdur), Sinclair, F. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  73. Natural regeneration and bark production in Prunus Africana (Hook.F.) Kalkman (Rosaceae) and its sustainable utilization and conservation in Kenya

    Kireger, E. K. (Awdur), Hall, J. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  74. Synthetic studies of ferrocene-containing monomers and polymers

    Kelly, G. A. (Awdur), Butler, I. (Goruchwylydd), 2003

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  75. 2002
  76. Ecology and socio-economic importance of short fallows in the humid forest zone of Southern Cameroon.

    Ngobo Nkongo, M. P. (Awdur), McDonald, M. (Goruchwylydd), Rhag 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  77. Technologies for the manufacture of decay resistant and dimensionally stable OSB

    Goroyias, G. I. (Awdur), Hale, M. (Goruchwylydd), Tach 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  78. Integrating farmers' knowledge and decision-making in the planning of participatory research of cassava/maize intercropping

    Lopez Montes, A. J. (Awdur), Sinclair, F. (Goruchwylydd), Hyd 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  79. The environmental behaviour and toxicological effect of propetamphos in an estuarine environment.

    Ortega, S. G. (Awdur), Holliman, P. (Goruchwylydd) & Jones, D. (Goruchwylydd), Hyd 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  80. Tree crown pruning as a management tool to enhance the productivity of parklands in West Africa

    Bayala, J. (Awdur), Teklehaimanot, Z. (Goruchwylydd), Medi 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  81. New reactions relating to Lewis acidic properties of borate esters

    Rugen-Hankey, M. P. (Awdur), Beckett, M. A. (Goruchwylydd), Awst 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  82. Single tree felling gaps and regeneration in Tanzania montane forests

    Bakari, J. R. (Awdur), Hall, J. (Goruchwylydd), Awst 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  83. Synthesis and catalytic properties of novel C2 symmetric guanidine bases.

    Thomas, D. A. (Awdur), Murphy, P. (Goruchwylydd), Awst 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  84. Influence of crop profitability, market, labour and land on smallholder cropping systems in rubber growing areas of Sri Lanka

    Thennakoon, T. M. S. P. K. (Awdur), Sinclair, F. (Goruchwylydd), Gorff 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  85. Influence of season and temperature on the metabolic costs of survival in the intertidal isopod, Ligia oceanica

    Faulkner, L. S. (Awdur), Whiteley, N. (Goruchwylydd), Meh 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  86. The application of spatial data in forest ecology and management; windthrow, carbon sequestration and climate change

    Al-Amin, M. (Awdur), Williams, J. (Goruchwylydd), Meh 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  87. Constructed wetlands for the treatment of British mine drainage waters : a biogeochemical approach.

    Dennison, F. E. (Awdur), Mai 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  88. Evaluation of surface water resources of Marab Hassan in the Northeast Badia of Jordan

    Shatnawi, S. R. S. (Awdur), Cratchley, R. (Goruchwylydd), Mai 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  89. Ecology and silviculture of Osyris lanceolata (African sandalwood) : an aromatic tree of Tanzania

    Mwang'ingo, P. L. P. (Awdur), Teklehaimanot, Z. (Goruchwylydd), Ebr 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  90. Vector trypanosome relationships

    Malele, I. I. (Awdur), Lehane, M. (Goruchwylydd), Ebr 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  91. Effects of atmospheric CO₂ enrichment on root processes and mycorrhizal functioning in short rotation intensive poplar plantation

    Lukac, M. (Awdur), Godbold, D. (Goruchwylydd), Maw 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  92. Glycinebetaine accumulation in cotton

    Shafi, Y. (Awdur), Gorham, J. (Goruchwylydd), Maw 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  93. Detection of Volatile Organic Compounds Using Fuel Cell Sensors

    Wheldon-Williams, R. (Awdur), Ion 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  94. Moderately thermophilic acidophiles and their use in mineral processing

    Okibe, N. (Awdur), Johnson, B. (Goruchwylydd), Ion 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  95. The effects of climate change on dissolved organic carbon release from peatlands

    Fenner, N. (Awdur), Freeman, C. (Goruchwylydd), Ion 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  96. Compatibilisation of natural fibres for use in polypropylene matrix composites

    Spear, M. (Awdur), Hill, C. (Goruchwylydd), 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  97. Drivers of land use change and policy analysis: the case of Bangladesh

    Jashimuddin, M. (Awdur), Edwards-Jones, G. (Goruchwylydd), 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  98. Effects of pH on nitrogen cycling in agricultural soils

    Kemmitt, S. J. (Awdur), Jones, D. (Goruchwylydd) & Wright, D. (Goruchwylydd), 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

  99. Evaluation of the role of trees and shrubs in seasonally dry pastures of Colombia

    Cajas-Girón, Y. S. (Awdur), Sinclair, F. (Goruchwylydd), 2002

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth