Porth Ymchwil

Professor Davey Jones

Professor of Soil and Environmental Science / Associate Pro Vice-Chancellor

Aelodaeth

Dolenni cyswllt

Lawrlwytho CV
ORCID: 0000-0002-1482-4209

Contact info

Address: Environment Centre Wales, Bangor University, Bangor, Gwynedd, LL57 2UW

Email:  d.jones@bangor.ac.uk

Tel: 07827 807516 (UK) and 00 44 1248 382579 (International)

Researchgate profile; Google scholar profile; Twitter feed; Web of Science ResearcherID: C-7411-2011

601 - 650 o blith 677Maint y tudalen: 50
Trefnu yn ôl: Math
  1. Erthygl › Ymchwil › Adolygwyd gan gymheiriaid
  2. Cyhoeddwyd

    Viromic Analysis of Wastewater Input to a River Catchment Reveals a Diverse Assemblage of RNA Viruses

    Adriaenssens, E. M., Farkas, K., Harrison, C., Jones, D. L., Allison, H. E. & McCarthy, A., 22 Mai 2018, Yn: mSystems. 3, 3, e00025-18.

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

  3. Cyhoeddwyd

    Volatile organic compounds (VOCs) allow sensitive differentiation of biological soil quality

    Brown, R., Ian D. Bull, Toby Journeaux, Chadwick, D. & Jones, D. L., 1 Mai 2021, Yn: Soil Biology and Biochemistry. 156, 108187.

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

  4. Cyhoeddwyd

    Vulnerability of British farms to post-Brexit subsidy removal, and implications for intensification, extensification and land sparing.

    Arnott, D., Chadwick, D., Wynne-Jones, S. & Jones, D. L., Awst 2021, Yn: Land Use Policy. 107, 104154.

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

  5. Cyhoeddwyd

    Vulnerability of exporting nations to the development of a carbon label in the United Kingdom

    Edwards-Jones, G., Plassmann, K., York, E., Hounsome, B., Jones, D. & Mila I Canals, L., 1 Meh 2009, Yn: Environmental Science and Policy. 12, 4, t. 479-490

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

  6. Cyhoeddwyd

    Warming alters competition for organic and inorganic nitrogen between co-existing grassland plant species

    Kuster, T. M., Wilkinson, A., Hill, P. W., Bardgett, R. D. & Jones, D., 1 Medi 2016, Yn: Plant and Soil. 406, 1-2, t. 117-129

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

  7. Cyhoeddwyd

    Wastewater and public health: the potential of wastewater surveillance for monitoring COVID-19

    Farkas, K., Hillary, L., Malham, S., McDonald, J. & Jones, D. L., Hyd 2020, Yn: Current Opinion in Environmental Science & Health. 17, t. 14-20 7 t.

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

  8. Cyhoeddwyd

    Wastewater-based epidemiology for comprehensive community health diagnostics in a national surveillance study: Mining biochemical markers in wastewater

    Kasprzyk-Hordern, B., Sims, N., Farkas, K., Jagadeesan, K., Proctor, K., Wade, M. J. & Jones, D. L., 15 Mai 2023, Yn: Journal of Hazardous Materials. 450, 1 t., 130989.

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

  9. Cyhoeddwyd

    Wastewater-based monitoring of SARS-CoV-2 at UK airports and its potential role in international public health surveillance

    Farkas, K., Williams, R., Alex-Sanders, N., Grimsley, J. M. S., Pântea, I., Wade, M. J., Woodhall, N. & Jones, D. L., 19 Ion 2023, Yn: PLOS global public health. 3, 1, e0001346.

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

  10. Cyhoeddwyd

    Whole tree harvesting can reduce second rotation forest productivity

    Walmsley, J. D., Jones, D. L., Reynolds, B., Price, M. H. & Healey, J. R., 10 Chwef 2009, Yn: Forest Ecology and Management. 257, 3, t. 1104-1111

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

  11. Cyhoeddwyd

    Within-field spatial variability of greenhouse gas fluxes from an extensive and intensive sheep-grazed pasture

    Charteris, A. F., Harris, P., Marsden, K. A., Harris, I. M., Guo, Z., Beaumont, D. A., Taylor, H., Sanfratello, G., Jones, D. L., Johnson, S. C. M., Whelan, M. J., Howden, N., Sint, H., Chadwick, D. R. & Cardenas, L. M., 1 Meh 2021, Yn: Agriculture, Ecosystems and Environment. 312, 107355.

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

  12. Cyhoeddwyd

    Yield and vitamin C content of tomatoes grown in vermicomposted wastes.

    Roberts, P., Jones, D. & Edwards-Jones, G., 15 Awst 2007, Yn: Journal of the Science of Food and Agriculture. 87, 10, t. 1957-1963

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

  13. Cyhoeddwyd

    Yield responses of wheat (Triticum aestivum) to vermicompost applications

    Roberts, P., Edwards-Jones, G. & Jones, D. L., 1 Rhag 2007, Yn: Compost Science and Utilization. 15, 1, t. 6-15

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

  14. Cyhoeddwyd

    pH and exchangeable aluminum are major regulators of microbial energy flow and carbon use efficiency in soil microbial communities

    Jones, D. L., Cooledge, E., Hoyle, F., Griffiths, R. & Murphy, D., Tach 2019, Yn: Soil Biology and Biochemistry. 138, 107584.

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

  15. Cyhoeddwyd

    pH regulation of carbon and nitrogen dynamics in two agricultural soils.

    Kemmitt, S. J., Wright, D., Goulding, K. W. & Jones, D. L., 1 Mai 2006, Yn: Soil Biology and Biochemistry. 38, 5, t. 898-911

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

  16. Golygyddiad › Ymchwil › Adolygwyd gan gymheiriaid
  17. Cyhoeddwyd

    Environmental impacts of agricultural plastic film mulch: Fate, consequences, and solutions

    Ding, F., Jones, D. L., Chadwick, D. R., Kim, P. J., Jiang, R. & Flury, M., 25 Awst 2022, Yn: Science of the Total Environment. 836

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

  18. Cyhoeddwyd

    Innovations in soil science to address global grand challenges

    Haygarth, P. M., Kirk, G. J. D. & Jones, D. L., 2021, Yn: European Journal of Soil Science. 72, 6, t. 2317-2319 3 t.

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

  19. Cyhoeddwyd

    Wastewater-Based Epidemiology: Global Collaborative to Maximize Contributions in the Fight Against COVID-19

    Bivins, A., North, D., Ahmad, A., Ahmed, W., Alm, E., Been, F., Bhattacharya, P., Bijlsma, L., Boehm, A. B., Brown, J., Buttiglieri, G., Calabro, V., Carducci, A., Castiglioni, S., Gurol, Z. C., Chakraborty, S., Costa, F., Curcio, S., de los Reyes, F. L. . III., Vela, J. D., Farkas, K., Fernandez-Casi, X., Gerba, C., Gerrity, D., Girones, R., Gonzalez, R., Haramoto, E., Harris, A., Holden, P. A., Islam, M. T., Jones, D. L., Kasprzyk-Hordern, B., Kitajima, M., Kotlarz, N., Kumar, M., Kuroda, K., La Rosa, G., Malpei, F., Mautus, M., McLellan, S. L., Medema, G., Meschke, J. S., Mueller, J., Newton, R. J., Nilsson, D., Noble, R. T., van Nuijs, A., Peccia, J., Perkins, T. A., Pickering, A. J., Rose, J., Sanchez, G., Smith, A., Stadler, L., Stauber, C., Thomas, K., van der Voorn, T., Wigginton, K., Zhu, K. & Bibby, K., 7 Gorff 2020, Yn: Environmental Science and Technology. 54, 13, t. 7754-7757

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

  20. Crynodeb Cyfarfod › Ymchwil › Adolygwyd gan gymheiriaid
  21. Cyhoeddwyd

    EFFECT OF ALUMINUM ON CALCIUM HOMEOSTASIS AND IP3 MEDIATED SIGNAL-TRANSDUCTION IN TRITICUM-AESTIVUM AND N-PLUMBAGINIFOLIA

    SHAFF, JE., KOCHIAN, LV. & Jones, D. L., Meh 1995, Yn: Plant Physiology. 108, 2, t. 41-41

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Effect of aluminum, oxidative, mechanical and anaerobic stress on cytoplasmic Ca2+ homeostatis in Arabidopsis root hairs

    Gilroy, S., Kochian, LV. & Jones, D. L., 1 Meh 1996, Yn: Plant Physiology. 111, 2, t. 78-78

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Use of vibrating ion selective microelectrodes to study the physiology of heavy metal transport into roots

    Papernik, LA., Shaff, JE., Kochian, LV. & Jones, D. L., Meh 1996, Yn: Plant Physiology. 111, 2, t. 128-128

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  24. Pennod › Ymchwil › Heb ei adolygu gan gymheiriaid
  25. Cyhoeddwyd

    Aluminium toxicity.

    Jones, D. L., Ryan, P. R., Thomas, B. (gol.), Murphy, D. (gol.) & Murray, B. (gol.), 1 Ion 2003, Encyclopaedia of applied plant science. 2003 gol. Academic Press, t. 656-664

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

  26. Cyhoeddwyd

    Dissolved organic nitrogen and mechanisms of its uptake by plants in agricultural systems.

    Jones, D. L., Farrar, J. F., Macdonald, A. J., Kemmitt, S. J., Murphy, D. V., Ma, L. (gol.), Ahuja, L. R. (gol.) & Bruulsema, T. (gol.), 1 Ion 2008, Quantifying and Understanding Plant Nitrogen Uptake for Systems Modeling. 2008 gol. CRC Press, t. 95-126

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

  27. Cyhoeddwyd

    Dissolved organic nitrogen concentration in two grassland soils.

    Jones, D. L., Farrar, J. F., Willett, V. B., Hatch, D. J. (gol.), Chadwick, D. R., Jarvis, S. C. & Roker, J. A. (gol.), 1 Ion 2004, Controlling Nitrogen Flows and Losses. 2004 gol. Wageningen Academic Publishers, t. 441-443

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

  28. Cyhoeddwyd

    Human enteric pathogens in the farming environment.

    Jones, D. L., Campbell, G., Kaspar, C. W., Haygarth, P. M. (gol.) & Jarvis, S. C., 1 Ion 2002, Agriculture: hydrology and water quality. 2002 gol. CAB International, t. 133-154

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

  29. Cyhoeddwyd

    Matching supply with demand.

    Murphy, D. V., Stockdale, E. A., Hoyle, F. C., Smith, J. U., Fillery, I. R., Milton, N., Cookson, W. R., Brussaard, L., Jones, D. L., Hatch, D. J. (gol.), Chadwick, D. R., Jarvis, S. C. & Roker, J. A. (gol.), 1 Ion 2004, Controlling nitrogen flows and losses. 2004 gol. Wageningen Academic Publishers, t. 101-112

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

  30. Cyhoeddwyd

    Missing N: is the solution in dissolved N?

    Macdonald, A. J., Jones, D. L., Hatch, D. J. (gol.), Chadwick, D. R., Jarvis, S. C. (gol.) & Roker, J. A. (gol.), 1 Ion 2004, Controlling nitrogen flows and losses. 2004 gol. Wageningen Academic Publishers, t. 600-605

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

  31. Cyhoeddwyd

    Organic acid root-tip tissue concentration in Brachiaria decumbens and Brachiaria ruziziensis

    Grundy, S. P., Jones, D. L., Godbold, D. L., Horst, W. W. (gol.), Sattelmacher, B. (gol.), Schmidhalter, U. (gol.), Schubert, S. (gol.), Von Wiren, N. (gol.), Wittenmayer, L. (gol.), Schenk, M. K. (gol.), Burkert, A. (gol.), Claassen, N. (gol.) & Flessa, H. (gol.), 1 Ion 2001, Plant nutrition - food security and sustainability of agro-ecosystems through applied and basic research.. 2001 gol. Kluwer Academic Publishers, t. 506-507

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

  32. Cyhoeddwyd

    Pathogen survival patterns in waste-derived composts destined for land restoration

    Williamson, J. C., Holmberg, J., Nason, M. A., Tandy, S., Jones, R., Healey, J. R., Jones, D. L., Vegh, B. (gol.) & Royle, J. (gol.), 1 Ion 2006, Proceedings of Waste 2006: sustainable waste and resource management, Stratford-upon-Avon, Warwickshire. 2006 gol. The Waste Conference Limited, t. 733-738

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

  33. Cyhoeddwyd

    Physical and chemical characteristics of composted wastes can be altered to make them suitable for large scale habitat creation

    Nason, M. A., Tandy, S., Williamson, J. C., Farrell, M., Healey, J. R., Jones, D. L., Vegh, B. (gol.) & Royle, J. (gol.), 1 Ion 2006, Proceedings of Waste 2006: sustainable waste and resource management, Stratford-upon-Avon, Warwickshire. 2006 gol. The Waste Conference Limited, t. 739-744

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

  34. Cyhoeddwyd

    Plants and the environment: land reclamation and remediation: Principles and practice

    Jones, D. L., Rowe, E. C., Thomas, B. (gol.), Murphy, D. (gol.) & Murray, B. (gol.), 1 Ion 2003, Encyclopaedia of applied plant science. 2003 gol. Academic Press, t. 741-748

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

  35. Cyhoeddwyd

    Recycling of wood ash to forests in North Wales, UK.

    Walmsley, J. D., Healey, J. R. & Jones, D. L., 1 Ion 2006, Proceedings of Second World Bioenergy Conference, 30 May-1 June 2006, Jönköping, Sweden. 2006 gol. Swedish Bioenergy Association, t. 347-351

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

  36. Cyhoeddwyd

    Rhizosphere methods in agroforestry research.

    Jones, D. L., Schroth, G. (gol.) & Sinclair, F., 1 Ion 2003, Trees: crops and soil fertility: concepts and research methods. 2003 gol. CAB International, t. 289-301

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

  37. Cyhoeddwyd

    Soil functioning in natural and planted woodlands on slate waste

    Williamson, J. C., Jones, D. L., Rowe, E. C., Healey, J. R., Bardgett, R., Hobbs, P., Moore, H. M. (gol.), Fox, H. R. (gol.) & Elliott, S. (gol.), 1 Ion 2003, Land Reclamation: Extending the Boundaries. 2003 gol. Taylor & Francis, t. 315-318

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

  38. Cyhoeddwyd

    Soil functioning in natural and planted woodlands on slate waste

    Williamson, J. C., Jones, D. L., Rowe, E. C., Healey, J. R., Bardgett, R., Hobbs, P., Moore, H. M. (gol.), Fox, H. R. (gol.) & Elliott, S. (gol.), 1 Ion 2003, Land reclamation. 2003 gol. Swets & Zeitlinger, t. 315-318

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

  39. Cyhoeddwyd

    The control of carbon acquisition by and growth of roots.

    Farrar, J. F., Jones, D. L., De Kroon, H. (gol.) & Visser, E. J. (gol.), 1 Ion 2003, Root Ecology. 2003 gol. Springer-Verlag Berlin and Heidelberg GmbH, t. 91-124

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

  40. Cyhoeddwyd

    Waste water treatment.

    Jones, D. L., Freeman, C., Thomas, B. (gol.), Murphy, D. (gol.) & Murray, B. (gol.), 1 Ion 2003, Encyclopaedia of applied plant science. 2003 gol. Academic Press, t. 772-781

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

  41. Pennod › Ymchwil › Adolygwyd gan gymheiriaid
  42. Cyhoeddwyd

    Can In-Situ Soil Nitrate Measurements Improve Nitrogen-Use Efficiency in Agricultural Systems?

    Jones, D. L., Chadwick, D. R., Rengaraj, S., Wu, D., Williams, A. P., Hill, P. W., Miller, A. J., Lark, R. M., Rosolem, C. A., Damin, V. & Shaw, R., 1 Rhag 2018, Proceedings 1466-1314. International Fertiliser Society, Cyfrol 825. t. 1-32 32 t. 825

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  43. Cyhoeddwyd

    The role of ion transport processes in root hair tip growth in Limnobium stoloniferum

    Kochian, L. V., Shaff, J. E. & Jones, D. L., 1994, Pollen-pistil interactions and pollen tube growth. Cyfrol 12. t. 150-160 (CURRENT TOPICS IN PLANT PHYSIOLOGY : AN AMERICAN SOCIETY OF PLANT PHYSIOLOGISTS SERIES).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Waste Water Treatment

    Jones, D., Freeman, C. & Sánchez-Rodríguez, A. R., 1 Ion 2017, Encyclopedia of Applied Plant Sciences. Thomas, B., Murray, B. G. & Murphy, D. J. (gol.). 2 gol. Elsevier, Cyfrol 3. t. 352 10 t.

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  45. Cyfraniad i Gynhadledd › Ymchwil › Heb ei adolygu gan gymheiriaid
  46. Cyhoeddwyd

    Evaluation of spatial contamination patterns for norovirus and faecal indicator bacteria near to a coastal sewage discharge using Mytilus edulis as biosentinels

    Winterbourn, J. B., Clements, K., Malham, S., McDonald, J. & Jones, D. L., Ion 2013, 92 McLeod et al (eds.). Proc. 9th Int. Conf. Molluscan Shellfish Safety . t. 89-92

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cyfraniad i Gynhadledd

  47. Papur › Ymchwil › Heb ei adolygu gan gymheiriaid
  48. Cyhoeddwyd

    Changes in water holding capacity of fine slate waste during decomposition of added plant litters

    Nason, M., Farrar, J. F., Healey, J. F., Jones, D. L., Williamson, J. C. & Rowe, E. C., 18 Rhag 2001.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  49. Cyhoeddwyd
  50. Cyhoeddwyd

    Overview of Biomass Energy in Wales, UK

    Walmsley, J. D., Jones, D. L. & Healey, J. R., 1 Medi 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  51. Cyhoeddwyd

    Pathogen survival patterns in waste-derived composts destined for land restoration

    Williamson, J. C., Holmberg, J., Nason, M. A., Tandy, S., Jones, R., Healey, J. R. & Jones, D. L., 1 Ion 2006, t. 733-738.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  52. Cyhoeddwyd

    Re-creating a woodland and heathland on slate waste in Wales

    Williamson, J. C., Rowe, E. C., Rendell, T., Healey, J. R., Jones, D. L., Holliman, P. J. & Nason, M. A., 9 Meh 2002, t. 449-458.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  53. Cyhoeddwyd

    Recycling of Wood Ash to Forests in the UK

    Walmsley, J. D., Jones, D. L. & Healey, J. R., 1 Medi 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  54. Cyhoeddwyd

    Recycling of Wood Ash to Forests: Application to PAWS Sites

    Pitman, R., Walmsley, J. D., Healey, J. R. & Jones, D. L., 1 Medi 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  55. Cyhoeddwyd

    Recycling of Wood Ash to Forests: Application to PAWS Sites

    Pitman, R., Walmsley, J. D., Healey, J. R. & Jones, D. A., 1 Medi 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  56. Cyhoeddwyd

    Recycling of wood ash to forests in North Wales, UK.

    Walmsley, J. D., Healey, J. R. & Jones, D. L., 30 Mai 2006, t. 347-351.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  57. Cyhoeddwyd

    Soil functioning in natural and restored systems on slate waste.

    Williamson, J. C., Jones, D. L., Bardgett, R. D., Hobbs, P. J., Rowe, E. C., Nason, M. A. & Healey, J. R., 18 Rhag 2001.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

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