1. 2020
2. Cyhoeddwyd

   Amlieithrwydd

   Webb-Davies, P., Cooper, S. & Arman, L., Tach 2020, Cyflwyniad i Ieithyddiaeth. Cooper, S. & Arman, L. (gol.). Caerfyrddin: Coleg Cymraeg Cenedlaethol, t. 181-214

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

3. Cyhoeddwyd

   Are concentrations of pollutants in sharks, rays and skates (Elasmobranchii) a cause for concern? A systematic review

   Tiktak, G., Butcher, D., Lawrence, P., Norrey, J., Bradley, L., Shaw, K., Preziosi, R. & Megson, D., Tach 2020, Yn: Marine Pollution Bulletin. 160, 111701.

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

4. Cyhoeddwyd

   Cancer diagnostic tools to aid decision-making in primary care: mixed-methods systematic reviews and cost-effectiveness analysis

   Medina-Lara, A., Grigore, B., Lewis, R., Peters, J., Price, S., Londa, P., Robinson, S., Neal, R., Hamilton, W. & Spencer, A., Tach 2020, Yn: Health Technology Assessment. 24, 66, t. 1-332 332 t.

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

5. Cyhoeddwyd

   Cyflwyniad i Ieithyddiaeth

   Cooper, S. (gol.) & Arman, L. (gol.), Tach 2020, Caerfyrddin: Coleg Cymraeg Cenedlaethol. 273 t.

   Allbwn ymchwil: Llyfr/Adroddiad › Llyfr

6. Cyhoeddwyd

   Detecting successional changes in tropical forest structure using GatorEye drone-borne lidar

   Alves de Almeida, D. R., Almeyda Zambrano, A. M., Broadbent, E. N., Wendt, A. L., Foster, P., Wilkinson, B. E., Salk, C., Papa, D. D. A., Stark, S. C., Valbuena, R., Gorgens, E. B., Silva, C. A., Santin Brancalion, P. H., Fagan, M., Meli, P. & Chazdon, R., Tach 2020, Yn: Biotropica. 52, 6, t. 1155-1167 13 t.

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

7. Cyhoeddwyd

   Dissimilatory sulfate reduction in the archaeon ‘Candidatus Vulcanisaeta moutnovskia’ sheds light on the evolution of sulfur metabolism

   Chernyh, N. A., Neukirchen, S., Frolov, E. N., Sousa, F. L., Miroshnichenko, M. L., Merkel, A. Y., Pimenov, N. V., Sorokin, D. Y., Ciordia, S., Mena, M. C., Ferrer, M., Golyshin, P., Lebedinsky, A. V., Cardoso Pereira, I. A. & Bonch-Osmolovskaya, E. A., Tach 2020, Yn: Nature Microbiology. 5, 11, t. 1428-+

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

8. Cyhoeddwyd

   Do plants use root-derived proteases to promote the uptake of soil organic nitrogen?

   Greenfield, L. M., Hill, P. W., Paterson, E., Baggs, E. M. & Jones, D. L., Tach 2020, Yn: Plant and Soil. 456, 1-2, t. 355-367

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

9. Cyhoeddwyd

   Exploring Preferred Dental Services of Swiss Older People for When They Become Dependent

   Chebib, N., Abou-Ayash, S., Maniewicz, S., Srinivasan, M., Hill, H., McKenna, G., Holmes, E., Schimmel, M., Brocklehurst, P. & Muller, F., Tach 2020, Yn: Swiss Dental Journal. 130, 11, t. 876-884

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

10. Cyhoeddwyd

    Final deglaciation of the Malin Sea through meltwater release and calving events

    Tarlati, S., Benetti, S., Callard, S. L., Ó Cofaigh, C., Georgiopoulou, A., Edwards, R., Van Landeghem, K., Saher, M., Chiverrell, R., Fabel, D., Moreton, S., Morgan, S. & Clark, C., Tach 2020, Yn: Scottish Journal of Geology. 56, 2, t. 117-133

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

11. Cyhoeddwyd

    Finance and income inequality revisited

    Altunbas, Y. & Thornton, J., Tach 2020, Yn: Finance Research Letters. 37, 101355.

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

12. Cyhoeddwyd

    From Pioneer of Comics to Cultural Myth: Castelao in Galician Graphic Biography

    Miranda-Barreiro, D., Tach 2020, Spanish Comics: Historical and Cultural Perspectives. Magnusen, A. (gol.). Berghahn, t. 80-100

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

13. Cyhoeddwyd

    Improvement of the deep UV sensor performance of a β-Ga2O3 photodiode by coupling of two planar diodes

    Vieira, D. H., Badiei, N., Evans, J. E., Alves, N., Kettle, J. & Li, L., Tach 2020, Yn: IEEE Transactions on Electron Devices. 67, 11, t. 4947 - 4952

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

14. Cyhoeddwyd

    Making authentic: exploring boundary objects and bricolage in knowledge mobilisation through National Health Service-university partnerships

    Melville-Richards, L., Rycroft-Malone, J., Burton, C. & Wilkinson, J., Tach 2020, Yn: Evidence & Policy. 16, 4, t. 517-539 23 t.

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

15. Cyhoeddwyd

    Managing and sharing research data in children's palliative care: Risks, benefits and imponderables

    the Joint Research Group for Together for Short Lives/Association of Paediatric Palliative Medicine, Tach 2020, Yn: Journal of Advanced Nursing. 76, 11, t. 2794-2797

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

16. Cyhoeddwyd

    Multi-century impacts of ice sheet retreat on sea level and ocean tides in Hudson Bay

    Hayden, A-M., Gomez, N., Wilmes, S-B. & Green, M., Tach 2020, Yn: Journal of Geophysical Research: Oceans. 125, 11

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

17. Cyhoeddwyd

    Mycobacterium alvei (ω-1)-methoxy mycolic acids: Absolute stereochemistry and synthesis

    Alhuwaymil, Z. S., Al-araj, I. Q. M., Dulayymi, A. R. A., Jones, A., Gates, P. J., Valero-Guillén, P. L., Baird, M. S. & Dulayymi, J. R. A., Tach 2020, Yn: Chemistry and Physics of Lipids. 233, 1 t., 104977.

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

18. Cyhoeddwyd

    Novel co-occurrence of functionally redundant consumers induced by range expansion alters community structure.

    Aguilera, M., Valdivia, N., Broitman, B., Jenkins, S. & Navarette, S., Tach 2020, Yn: Ecology. 101, 11, e03150.

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

19. Cyhoeddwyd

    Resilience in older persons: A systematic review of the conceptual literature

    Angevaare, M. J., Roberts, J., van Hout, H. P. J., Smalbrugge, M., Schoonmade, L. J., Windle, G. & Hertogh, C. M. P. M., Tach 2020, Yn: Ageing Research Reviews. 63, 101144.

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

20. Cyhoeddwyd

    Seiniau iaith: seineg a ffonoleg

    Cooper, S., Tach 2020, Cyflwyniad i Ieithyddiaeth. Cooper, S. & Arman, L. (gol.). Caerfyrddin: Coleg Cymraeg Cenedlaethol, t. 34-65

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

21. Cyhoeddwyd

    Synthesis of Candidate Advanced Technology Fuel: Uranium Diboride (UB2) via Carbo/Borothermic Reduction of UO2

    Turner, J., Martini, F., Buckley, J., Phillips, G., Middleburgh, S. & Abram, T., Tach 2020, Yn: Journal of Nuclear Materials. 540, 1252388.

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

22. Cyhoeddwyd

    Teaching Science to Students with Developmental Disabilities Using the Early Science Curriculum

    Apanasionok, M. M., Neil, J., Watkins, R., Grindle, C. & Hastings, R. P., Tach 2020, Yn: Support for Learning. 35, 4, t. 493-505

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

23. Cyhoeddwyd

    The EUSTACE Project: Delivering Global, Daily Information on Surface Air Temperature

    Rayner, N. A., Auchmann, R., Bessembinder, J., Bronnimann, S., Brugnara, Y., Capponi, F., Carrea, L., Dodd, E. M. A., Ghent, D., Good, E., Hoyer, J. L., Kennedy, J. J., Kent, E. C., Killick, R. E., van der Linden, P., Lindgren, F., Madsen, K. S., Merchant, C. J., Mitchelson, J. R., Morice, C. P., Nielsen-Englyst, P., Ortiz, P. F., Remedios, J. J., van der Schrier, G., Squintu, A. A., Stephens, A., Thorne, P. W., Tonboe, R. T., Trent, T., Veal, K. L., Waterfall, A. M., Winfield, K., Winn, J. & Woolway, R. I., Tach 2020, Yn: Bulletin of the American Meteorological Society. 101, 11, t. E1924-E1947

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

24. Cyhoeddwyd

    The Erogenous Mirror: Intersubjective and Multisensory Maps of Sexual Arousal in Men and Women

    Maister, L., Fotopoulou, A., Turnbull, O. & Tsakiris, M., Tach 2020, Yn: Archives of Sexual Behavior. 49, 8, t. 2919-2933 15 t.

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

25. Cyhoeddwyd

    The development of social preferences

    Cobo-Reyes, R., Dominguez, J. J., Garcia-Quero, F., Grosskopf, B., Lacomba-Arias, J. A., Lagos-Garcia, F., Liu, T. X. & Pearce, G., Tach 2020, Yn: Journal of Economic Behavior and Organization. 179, t. 653-666

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

26. Cyhoeddwyd

    Thermal conductivity variation in uranium dioxide with gadolinia additions

    Qin, M., Middleburgh, S., Cooper, M. W. D., Rushton, M., Puide, M., Kuo, E. Y., Grimes, R. W. & Lumpkin, G. R., Tach 2020, Yn: Journal of Nuclear Materials. 540, 152258.

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

27. Cyhoeddwyd

    UN microspheres embedded in UO2 matrix: an innovative accident tolerant fuel

    Ribeiro Costa, D., Hedberg, M., Middleburgh, S., Wallenius, J., Olssen, P. & Lopes, D. A., Tach 2020, Yn: Journal of Nuclear Materials. 540, 152355.

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

28. Cyhoeddwyd

    Using structured eradication feasibility assessment to prioritize the management of new and emerging invasive alien species in Europe

    Booy, O., Robinson, P. A., Moore, N., Ward, J., Roy, H. E., Adriaens, T., Shaw, R., van Valkenburg, J., Wyn, G., Bertolino, S., Blight, O., Branquart, E., Brundu, G., Caffrey, J., Capizzi, D., Casaer, J., De Clerck, O., Coughlan, N. E., Davis, E., Dick, J. T. A., Essl, F., Fried, G., Genovesi, P., Gonzalez-Moreno, P., Huysentruyt, F., Jenkins, S., Kerckhof, F., Frances, L. E., Nentwig, W., Newman, J., Rabitsch, W., Roy, S., Starfinger, U., Stebbing, P. D., Stuyck, J., Sutton-Croft, M., Tricario, E., Vanderhoven, S., Verreycken, H. & Mill, A. C., Tach 2020, Yn: Global Change Biology. 26, 11, t. 6235-6250 16 t.

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

29. Cyhoeddwyd

    Accurate estimation of fish length in single camera photogrammetry with a fiducial marker

    Monkman, G. G., Hyder, K., Kaiser, M. J. & Vidal, F. P., 1 Tach 2020, Yn: ICES Journal of Marine Science. 77, 6, t. 2245-2254 10 t.

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

30. Cyhoeddwyd

    Advances in metabarcoding techniques bring us closer to reliable monitoring of the marine benthos

    Steyaert, M., Priestley, V., Osborne, O., Herraiz, A., Arnold, R. & Savolainen, V., 1 Tach 2020, Yn: Journal of Applied Ecology. 57, 11, t. 2234–2245

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

31. Cyhoeddwyd

    Are novel ecosystems the only novelty of rewilding?

    Klop-Toker, K., Clulow, S., Shuttleworth, C. & Hayward, M., 1 Tach 2020, Yn: Restoration Ecology. 28, t. 1318-1320

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

32. Cyhoeddwyd

    BowelScope: Accuracy of Detection Using Endocuff Optimisation of Mucosal Abnormalities (the B-ADENOMA Study): a multicentre, randomised controlled flexible sigmoidoscopy trial

    B-ADENOMA trial group comprises, Rees, C. J., Brand, A., Ngu, W. S., Stokes, C., Hoare, Z., Totton, N., Bhandari, P., Sharp, L., Bastable, A., Rutter, M. D., Verma, A. M., Lee, T. J. & Walls, M., 1 Tach 2020, Yn: GUT . 69, 11, t. 1959-1965 7 t.

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

33. Cyhoeddwyd

    Carbon and sulphur tracing from soil organic sulphur in plants and soil microorganisms

    Ma, Q., Luo, Y., Wen, Y., Hill, P. W., Chadwick, D. R., Wu, L. & Jones, D. L., 1 Tach 2020, Yn: Soil Biology and Biochemistry. 150, 107971.

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

34. Cyhoeddwyd

    Co-Generation in the Early Days of Nuclear Power: Part 1: Calder Hall and Chapelcross

    Rushton, M. J. D. & Lee, W. E., 1 Tach 2020, Yn: Nuclear Future. 16, 6, t. 51-54

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

35. Cyhoeddwyd

    Ethical dilemmas when using citizen science for early detection of invasive tree pests and diseases

    Pocock, M. J. O., Marzano, M., Bullas-Appleton, E., Dyke, A., de Groot, M., Shuttleworth, C. & White, R., 1 Tach 2020, Yn: Management of Biological Invasions. 11, t. 720-732

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

36. Cyhoeddwyd

    Exercise behaviour, enjoyment and boredom

    Deck, S., Roberts, R., Hall, C. & Kouali, D., 1 Tach 2020, Yn: International Journal of Sport and Exercise Psychology. 18, 6, t. 779-793 15 t.

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

37. Cyhoeddwyd

    Hysterangium bonobo: A newly described truffle species that is eaten by bonobos in the Democratic Republic of Congo

    Elliott, T., Georgiev, A. V., Lotana Lokasola, A. & Smith, M., 1 Tach 2020, Yn: Mycologia. 112, 6, t. 1203-1211 9 t.

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

38. Cyhoeddwyd

    Is soluble protein mineralisation and protease activity in soil regulated by supply or demand?

    Greenfield, L. M., Hill, P. W., Seaton, F. M., Paterson, E., Baggs, E. M. & Jones, D. L., 1 Tach 2020, Yn: Soil Biology and Biochemistry. 150, 108007.

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

39. Cyhoeddwyd

    Making waves: Wastewater-based epidemiology for COVID-19-approaches and challenges for surveillance and prediction

    Polo, D., Quintela-Baluja, M., Corbishley, A., Jones, D. L., Singer, A. C., Graham, D. W. & Romalde, J. L., 1 Tach 2020, Yn: Water Research. 186, 116404.

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

40. Cyhoeddwyd

    Oxidopolyborate chemistry: The self-assembled, templated, synthesis, and an XRD study of a 1-D coordination polymer, [Cu(en){B6O7(OH)(6)}](.)3H(2)O (en=1,2-diaminoethane)

    Altahan, M., Beckett, M., Coles, S. J. & Horton, P. N., 1 Tach 2020, Yn: Phosphorus, Sulfur and Silicon and the Related Elements. 195, 11, t. 952-956 5 t.

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

41. Cyhoeddwyd

    Politics, preoccupations, pragmatics: a race/ethnicity redux for social work research

    Williams, C., 1 Tach 2020, Yn: European Journal of Social Work. 23, 6, t. 1057-1068 12 t.

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

42. Cyhoeddwyd

    Profiles of Met and Unmet Needs in People with Dementia According to Caregivers’ Perspective: Results from a European Multicenter Study

    Janssen, N., Handels, R. L., Kohler, S., Gonçalves-Pereira, M., Marques, M. J., Irving, K., Hopper, L., Bieber, A., Orrell, M., Selbæk, G., Michelet, M., Wimo, A., Zanetti, O., Portolani, D. M., Evers, S. M. A. A., Verhey, F. & Actifcare Consortium, 1 Tach 2020, Yn: Journal of the American Medical Directors Association. 21, 11, t. 1609-1616

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

43. Cyhoeddwyd

    Forecasting with the Theta Method

    Nikolopoulos, K. & Thomakos, D. D., 4 Tach 2020, Wiley StatsRef: Statistics Reference Online. Wiley

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

44. Cyhoeddwyd

    Non-linear landscape and cultural response to sea-level rise

    Barnett, R., Charman, D. J., Johns, C., Ward, S., Bevan, A., Bradley, S. L., Cambridge, K., Fyfe, R. M., Gehrels, W. R., Hatton, J., Khan, N. S., Marshall, P., Maezumi, S. Y., Mills, S., Mulville, J., Perez, M., Roberts, H. M., Scourse, J. D., Shepherd, F. & Stevens, T., 4 Tach 2020, Yn: Science Advances. 6, 45, eabb6376.

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

45. Cyhoeddwyd

    Poetry & Listening: The Noise of Lyric

    Skoulding, Z., 4 Tach 2020, Liverpool: Liverpool University Press. (Poetry &...; Cyfrol 10)

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr › adolygiad gan gymheiriaid

46. Cyhoeddwyd

    Polyphenolic Profiling of Forestry Waste by UPLC-HDMSE

    Potter, C. M. & Jones, D. L., 4 Tach 2020, Yn: Processes. 8

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

47. Cyhoeddwyd

    Comparison of Contemporary Elm (Ulmus spp.) and degraded Archaeological Elm: the use of dynamic mechanical analysis under ambient moisture conditions

    Spear, M. & Broda, M., 7 Tach 2020, Yn: Materials. 13, 21, 5026.

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

48. Cyhoeddwyd

    Bardsey – an island in a strong tidal stream: Underestimating coastal tides due to unresolved topography

    Green, M. & Pugh, D., 9 Tach 2020, Yn: Ocean Science. 16, 6, t. 1337–1345

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

49. Cyhoeddwyd

    Development, validation and effectiveness of diagnostic prediction tools for colorectal cancer in primary care: a systematic review

    Grigore, B., Lewis, R., Peters, J., Robinson, S. & Hyde, C. J., 10 Tach 2020, Yn: BMC Cancer. 20, 1, 1084.

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

50. Cyhoeddwyd

    Robert De Niro at work: From Screenplay to Screen Performance

    Ganz, A. & Price, S., 10 Tach 2020, Basingstoke: Palgrave Macmillan. 246 t. (Palgrave Studies in Screenwriting)

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr

51. Cyhoeddwyd

    Spectroscopic study of Ca-47 from the beta(-) decay of K-47

    Garnsworthy, A. B., Pore, J. L., Andreoiu, C., MacLean, A. D., Chester, A., Beadle, Z., Ball, G. C., Bender, P. C., Bildstein, V., Braid, R., Varela, A. D., Dunlop, R., Evitts, L. J., Garrett, P. E., Hackman, G., Ilyushkin, S. V., Jigmeddorj, B., Kuhn, K., Laffoley, A. T., Leach, K. G., Miller, D., Mills, W. J., Moore, W., Moukaddam, M., Olaizola, B., Peters, E. E., Radich, A. J., Rand, E. T., Sarazin, F., Svensson, C. E., Yates, S. W., Smith, J. K. & Williams, S. J., 11 Tach 2020, Yn: Physical Review C. 102, 5, t. 054314 1 t.

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