1. Cyhoeddwyd

   Uptake of an amino acid (alanine) and its peptide (trialanine) by the saltmarsh halophytes Salicornia europaea and Aster tripolium and its potential role in ecosystem N cycling and marine aquaculture wastewater treatment

   Quinta, R., Hill, P. W., Jones, D. L., Santos, R., Thomas, D. N. & Le Vay, L., Chwef 2015, Yn: Ecological Engineering. 75, t. 145–154

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2. Cyhoeddwyd

   Regulation of radial glial survival by signals from the meninges.

   Radakovits, R., Barros, C. S., Belvindrah, R., Patton, B. & Muller, U., 17 Meh 2009, Yn: Journal of Neuroscience. 29, 24, t. 7694-7705

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

3. E-gyhoeddi cyn argraffu

   Voluntary thermal maximum of grassland vipers (Vipera spp.): environmental drivers and local adaptation

   Radovics, D., Sos, T., Mebert, K., Üveges, B., Budai, M., Rák, G., Szabolcs, M., Lengyel, S. & Mizsei, E., 30 Medi 2023, (E-gyhoeddi cyn argraffu) Yn: Zoological Journal of the Linnean Society.

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

4. Cyhoeddwyd

   Typology of extreme flood event leads to differential impacts on soil functioning

   Rafael Sanchez-Rodriguez, A., Hill, P. W., Chadwick, D. R. & Jones, D. L., Chwef 2019, Yn: Soil Biology and Biochemistry. 129, t. 153-168

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

5. Cyhoeddwyd

   Extreme flood events at higher temperatures exacerbate the loss of soil functionality and trace gas emissions in grassland

   Rafael Sanchez-Rodriguez, A., Nie, C., Hill, P. W., Chadwick, D. R. & Jones, D. L., Maw 2019, Yn: Soil Biology and Biochemistry. 130, t. 227-236

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

6. Cyhoeddwyd

   Mind the gap: the use of research in protected area management in Madagascar

   Rafidimanantsoa, H. P., Poudyal, M., Ramamonjisoa, B. S. & Jones, J. P. G., Rhag 2018, Yn: Madagascar Conservation and Development. 13, 1, t. 15-24

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

7. Cyhoeddwyd

   Reducing household greenhouse gas emissions from space and water heating through low-carbon technology: identifying cost-effective approaches

   Rafique, A. & Williams, P., 1 Hyd 2021, Yn: Energy and Buildings. 248, 11162.

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

8. Cyhoeddwyd

   Seasonal Variation of Mono, Di and Polysaccharides in British Bluebells (Hyacinthoides Non-Scripta)

   Raheem, D. & Thoss, V., 2016, Yn: Journal of Plant Chemistry and Ecophysiology. 1, 1, 1005.

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

9. Cyhoeddwyd

   Application of metabolomics and molecular networking in investigating the chemical profile and antitrypanosomal activity of British bluebells (Hyacinthoides non-scripta)

   Raheem, D. J., Tawfike, A. F., Edrada-Ebel, R., Abdelmohsen, U. R., Edrada-Ebel, R. & Fitzsimmons-Thoss, V., 22 Chwef 2019, Yn: Scientific Reports. 9, 1, 13 t., 2547.

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

10. Cyhoeddwyd

    Finding alternatives to swidden agriculture: Does agroforestry improve livelihood options and reduce pressure on existing forest?

    Rahman, S. A., Jacobsen, J. B., Healey, J. R., Roshetko, J. M. & Sunderland, T., Chwef 2017, Yn: Agroforestry Systems. 91, 1

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

11. Cyhoeddwyd

    Towards Productive Landscapes: Trade-offs in Tree-cover and Income across a Matrix of Smallholder Agricultural Land-use Systems

    Rahman, S., Sunderland, T., Kshatriya, M., Roshetko, J. M., Pagella, T. & Healey, J., 15 Rhag 2016, Yn: Land Use Policy. 58, December, t. 152-164

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

12. Cyhoeddwyd

    Cultivated plants in the diversified homegardens of local communities in Ganges Valley, Bangladesh

    Rahman, S., Baldauf, C., Mollee, E., Abdullah-al-Pavel, M., Abdullah-al-Mamun, M., Mannan, T. & Sunderland, T., 2013. 6 t.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

13. Cyhoeddwyd

    Facilitating smallholder tree farming in fragmented tropical landscapes: Challenges and potentials for sustainable land management

    Rahman, S., Sunderland, T., Roshetko, J. M. & Healey, J., Awst 2017, Yn: Journal of Environmental Management. 198, Part 1, t. 110-121

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

14. Cyhoeddwyd

    Tree Culture of Smallholder Farmers Practicing Agroforestry in Gunung Salak Valley, West Java, Indonesia

    Rahman, S. A., Sunderland, T., Roshetko, J. M., Basuki, I. & Healey, J., 1 Rhag 2016, Yn: Small-Scale Forestry. 15, 4, t. 433-442

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

15. Cyhoeddwyd

    Revue des textes fonciers et forestiers pour la mise en œuvre de la restauration des paysages forestiers à Madagascar

    Rajaonarivelo, H. M., Rakotonarivo, S., Raharijoana, S., Raparison, E., Rakotoarisoa, M. & Hockley, N., 1 Rhag 2021, Yn: Madagascar Conservation and Development. 16, 1, t. 32-42

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

16. Cyhoeddwyd

    Effects of sowing method on survival, ion uptake and yield of wheat (Triticum aestivum L.) in sodic soils.

    Rajpar, I. & Wright, D., 1 Meh 2000, Yn: Journal of Agricultural Science. 134, 4, t. 369-378

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

17. Cyhoeddwyd

    The effects of environmental education on children's and parents' knowledge and attitudes towards lemurs in rural Madagascar

    Rakotomamonjy, S. N., Jones, J. P. G., Razafimanahaka, J. H., Ramamonjisoa, B. & Williams, S., 8 Ebr 2015, Yn: Animal Conservation. 18, 2, t. 157-166

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

18. Cyhoeddwyd

    Resolving land tenure security is essential to deliver forest restoration

    Rakotonarivo, O. S., Rakotoarisoa, M., Rajaonarivelo, H. M., Raharijaona, S., Jones, J. P. G. & Hockley, N., 25 Mai 2023, Yn: Communications Earth and Environment. 4, 1, 179.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

19. Cyhoeddwyd

    Estimating welfare impacts where property rights are contested: methodological and policy implications

    Rakotonarivo, O., Jacobsen, J., Poudyal, M., Rasoamanana, A. & Hockley, N., Ion 2018, Yn: Land Use Policy. 70, t. 71-83

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

20. Cyhoeddwyd

    A systematic review of the reliability and validity of discrete choice experiments in valuing non-market environmental goods

    Rakotonarivo, O., Schaafsma, M. & Hockley, N., 1 Rhag 2016, Yn: Journal of Environmental Management. 183, 1, t. 98-109

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

21. Cyhoeddwyd

    Qualitative and quantitative evidence on the true local welfare costs of forest conservation in Madagascar: Are discrete choice experiments a valid ex ante tool?

    Rakotonarivo, S., Jacobsen, J. B., Larsen, J. B., Jones, J. P. G., Nielsen, M. S., Ramamonjisoa, B. S., Mandimbiniaina, R. & Hockley, N., Meh 2017, Yn: World Development. 94, t. 478-491

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

22. Cyhoeddwyd

    Madagascar's extraordinary biodiversity: Threats and opportunities

    Ralimanana, H., Perrigo, A. L., Smith, R. J., Borrell, J. S., Faurby, S., Rajaonah, M. T., Randriamboavonjy, T., Vorontsova, M. S., Cooke, R. S. C., Phelps, L. N., Sayol, F., Andela, N., Andermann, T., Andriamanohera, A. M., Andriambololonera, S., Bachman, S. P., Bacon, C. D., Baker, W. J., Belluardo, F., Birkinshaw, C., Cable, S., Canales, N. A., Carrillo, J. D., Clegg, R., Clubbe, C., Crottini, A., Damasco, G., Dhanda, S., Edler, D., Farooq, H., de Lima Ferreira, P., Fisher, B. L., Forest, F., Gardiner, L. M., Goodman, S. M., Grace, O. M., Guedes, T. B., Hackel, J., Henniges, M. C., Hill, R., Lehmann, C. E. R., Lowry, P. P., Marline, L., Matos-Maraví, P., Moat, J., Neves, B., Nogueira, M. G. C., Onstein, R. E., Papadopulos, A. S. T., Perez-Escobar, O. A., Phillipson, P. B., Pironon, S., Przelomska, N. A. S., Rabarimanarivo, M., Rabehevitra, D., Raharimampionona, J., Rajaonary, F., Rajaovelona, L. R., Rakotoarinivo, M., Rakotoarisoa, A. A., Rakotoarisoa, S. E., Rakotomalala, H. N., Rakotonasolo, F., Ralaiveloarisoa, B. A., Ramirez-Herranz, M., Randriamamonjy, J. E. N., Randrianasolo, V., Rasolohery, A., Ratsifandrihamanana, A. N., Ravololomanana, N., Razafiniary, V., Razanajatovo, H., Razanatsoa, E., Rivers, M., Silvestro, D., Testo, W., Torres Jiménez, M. F., Walker, K., Walker, B. E., Wilkin, P., Williams, J., Ziegler, T., Zizka, A. & Antonelli, A., 2 Rhag 2022, Yn: Science. 378, 6623, eadf1466.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid

23. Cyhoeddwyd

    A paper microfluidic device based colorimetric sensor for the detection and discrimination of elapid versus viper envenomation

    Ramana, L., Mathapati, S. S., Salvi, N., Khadilkar, M. V., Malhotra, A., Santra, V. & Sharma, T. K., 21 Chwef 2022, Yn: Analyst. 147, 4, t. 685-694

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

24. Cyhoeddwyd

    Detecting macroecological patterns in bacterial communities across independent studies of global soils

    Ramirez, K. S., Knight, C. G., Hollander, M., Brearley, F. Q., Constantinides, B., Cotton, T. E. A., Creer, S., Crowther, T. W., Davison, J., Delgado-Baquerizo, M., Dorrepaal, E., Elliott, D. R., Fox, G., Griffiths, R., Hale, C., Hartman, K., Houlden, A., Jones, D., Krab, E. J., Maestre, F. T., McGuire, K. L., Monteux, S., Orr, C. H., van der Putten, W. H., Roberts, I. S., Robinson, D., Rocca, J., Rowntree, J., Schlaeppi, K., Shepherd, M., Singh, B. K., Straathof, A., Talbot, J. M., Thion, C., van der Heijden, M. & de Vries, F. T., 2018, Yn: Nature Microbiology. 3, t. 189-196 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

25. Cyhoeddwyd

    Structural and functional characterization of a ruminal β-glycosidase defines a novel subfamily of glycosyl hydrolase family 3 with permuted domain topology

    Ramirez-Escudero, M., del Pozo, M. V., Marin-Navarro, J., Gonzalez, B., Golyshin, P., Polaina, J., Ferrer, M. & Sanz-Aparico, J., 11 Tach 2016, Yn: Journal of Biological Chemistry. 291, t. 24200-24214

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

26. Cyhoeddwyd

    Slight changes in the chemical structure of haemanthamine greatly influence the effect of the derivatives on rumen fermentation in vitro

    Ramos-Morales, E., Braganca, R., Murphy, P., Tibble-Howlings, J. & Newbold, C. J., 21 Chwef 2019, Yn: Scientific Reports. 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

27. Cyhoeddwyd

    Improving the antiprotozoal effect of saponins in the rumen by combination with glycosidase inhibiting iminosugars or by modification of their chemical structure

    Ramos-Morales, E., de la Fuente, G., Nash, R. J., Braganca, R., Duval, S., Bouillon, M., Lahmann, M. & Newbold, J., 8 Medi 2017, Yn: PLoS ONE. 12, 9, e0184517.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

28. Cyhoeddwyd

    Antiprotozoal effect of saponins in the rumen can be enhanced by chemical modifications in their structure

    Ramos-Morales, E., De La Fuente, G., Duval, S., Wehrli, C., Bouillon, M., Lahmann, M., Preskett, D., Braganca, R. & Newbold, J., 16 Maw 2017, Yn: Frontiers in Microbiology. 8, 399.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

29. Cyhoeddwyd

    Biogeochemical tags in fish: predicting spatial variations in strontium and manganese in Salmo trutta scales using stream water geochemistry

    Ramsay, A. L., Hughes, R. N., Chenery, S. R. & McCarthy, I. D., 11 Tach 2014, Yn: Canadian Journal of Fisheries and Aquatic Sciences. 72, 3, t. 422-433

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

30. Cyhoeddwyd

    Modelling agri-environment interactions and trade-offs using Farm-adapt-integration of models, investigation of scale, dynamics and uncertainty.

    Ramsden, S. J., Gibbons, J. M., MacLeod, M. (gol.), Mayne, S. (gol.), McRoberts, N. (gol.), Oldham, J. (gol.), Renwick, A. (gol.), Rivington, M. (gol.), Russell, G. (gol.), Toma, L. (gol.), Topp, K. (gol.), Wall, E. (gol.) & Wreford, A. (gol.), 1 Ion 2009, Aspects of Applied Biology 93, Integrated Agricultural Systems: Methoodologies, Modelling and Measuring. 2009 gol. Association of Applied Biologists, t. 123-130

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

31. Cyhoeddwyd

    The antigenicity and cholesteroid nature of mycolic acids determined by recombinant chicken antibodies

    Ranchod, H., Ndlanda, F. L., Lemmer, Y., Beukes, M., Niebuhr, J., Al-Dulayymi, J., Wemmer, S., Fehrsen, J., Baird, M. & Verschoor, J. A., 9 Awst 2018, Yn: PLoS ONE. 13, 8

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

32. Cyhoeddwyd

    Consumption of bushmeat around a major mine, and matched communities, in Madagascar

    Randriamamonjy, V. C., Keane, A., Razafimanahaka, H. J., Jenkins, R. K. & Jones, J. P. G., 19 Maw 2015, Yn: Biological Conservation. 186

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

33. Cyhoeddwyd

    Greenhouse gas sink or health risk? Assessing the fate of polycyclic aromatic hydrocarbons (PAHs) in biochar within the plant-soil system

    Rangecroft, S., DeLuca, T., Emmett, B. & Jones, D., 22 Awst 2010, Yn: Abstracts of papers - American Chemical Society. 240

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

34. Cyhoeddwyd

    Lignocellulose-Degrading Microbial Communities in Landfill Sites Represent a Repository of Unexplored Biomass- Degrading Diversity Emma

    Ransom-Jones, E., McCarthy, AJ., Haldenby, S., Doonan, J. & McDonald, JE., Awst 2017, Yn: mSphere. 2, 4, e00300.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

35. Cyhoeddwyd

    Distribution and diversity of members of the bacterial phylum Fibrobacteres in environments where cellulose degradation occurs

    Ransom-Jones, E., Jones, D. L., Edwards, A. & McDonald, J. E., 17 Gorff 2014, Yn: Systematic and Applied Microbiology. 37, 7, t. 502-509

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

36. Cyhoeddwyd

    The Fibrobacteres: an Important Phylum of Cellulose-Degrading Bacteria

    Ransom-Jones, E., Jones, D., McCarthy, A. J. & McDonald, J. E., Chwef 2012, Yn: Microbial Ecology. 63, 2, t. 267-281

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

37. Cyhoeddwyd

    Draft Genome Sequence of Clostridium sp. strain W14A isolated from a cellulose-degrading biofilm in a landfill leachate microcosm

    Ransom-Jones, E. & McDonald, J., 22 Medi 2016, Yn: Genome Announcements. 4, 5, e0098516.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

38. Cyhoeddwyd

    Costs and benefits of invasive exotic plants in the Mediterranean.

    Raquin, A., Edwards-Jones, G., Bardsley, D. & Papanastasis, A. (gol.), 25 Ebr 2004, t. 1-10.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

39. Cyhoeddwyd

    On-farm seed priming: a key technology for improving the livelihoods of resource-poor farmers on saline lands

    Rashid, A., Harris, D., Hollington, P. A., Khattak, R. A., Ahmad, R. (gol.) & Malik, K. A. (gol.), 1 Ion 2002, Prospects for Saline Agriculture. 2002 gol. Kluwer Academic Publishers, t. 423-431

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

40. Cyhoeddwyd

    Downscaling Global Land-Use Scenario Data to the National Level: A Case Study for Belgium

    Rashidi, P., Patil, S., Schipper, A. M., Alkemade, R. & Rosa, I., 7 Medi 2023, Yn: Land.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

41. Cyhoeddwyd

    Effectiveness of Community Forest Management at reducing deforestation in Madagascar

    Rasolofoson, R. A., Ferraro, P. J., Jenkins, C. N. & Jones, J. P. G., 21 Chwef 2015, Yn: Biological Conservation. 184, t. 251-277

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

42. Cyhoeddwyd

    Impacts of Community Forest Management on human economic well-being across Madagascar

    Rasolofoson, R., Ferraro, P. J., Ruta, G., Rasamoelina, M. S., Randriankolona, P. L., Larsen, H. O. & Jones, J. P. G., Mai 2017, Yn: Conservation Letters. 10, 3, t. 346-353

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

43. Cyhoeddwyd

    The potential of the Global Person Generated Index for evaluating the perceived impacts of conservation interventions on subjective well-being

    Rasolofoson, R., Nielsen, M. R. & Jones, J. P. G., Mai 2018, Yn: World Development. 105, t. 107-118

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

44. Cyhoeddwyd

    Congeneric amphipods show differing abilities to maintain metabolic rates with latitude.

    Rastrick, S. P. & Whiteley, N. M., 1 Maw 2011, Yn: Physiological and Biochemical Zoology: Ecological and Evolutionary Approaches. 84, 2, t. 154-165

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

45. Cyhoeddwyd

    Minimal latitudinal variations in metabolic rate in temperate but not polar amphipod gammarids.

    Rastrick, S. P. & Whiteley, N. M., 1 Ion 2008.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

46. Cyhoeddwyd

    Influence of Natural Thermal Gradients on Whole Animal Rates of Protein Synthesis in Marine Gammarid Amphipods

    Rastrick, S. P. & Whiteley, N. M., 27 Maw 2013, Yn: PLoS ONE. 8, 3, t. e60050

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

47. Cyhoeddwyd

    Minimal latitudinal variations in the metabolic rates of temperate but not polar gammarid amphipods.

    Rastrick, S. P. & Whiteley, N. M., 1 Ion 2008, 2008 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

48. Cyhoeddwyd

    Feeding plasticity more than metabolic rate drives the productivity of economically important filter feeders in response to elevated CO2 and reduced salinity

    Rastrick, S., Graham, H., Strohmeier, T., Whiteley, N. & Strand, Ø., 1 Rhag 2018, Yn: ICES Journal of Marine Science. 75, 6, t. 2117-2128

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

49. Cyhoeddwyd

    Protect Madagascar’s national parks from pillage

    Ratsimbazafy, J., Jones, J. P. G. & Mittermeier, R., 30 Ion 2019, Yn: Nature. 565, 7741, t. 567

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid

50. Cyhoeddwyd

    Biomining

    Rawlings, D. E. (gol.) & Johnson, D. B. (gol.), 1 Ion 2006, 2006 gol. Springer Verlag.

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr