1. Cyhoeddwyd

   Spectral history model in DYN3D: Verification against coupled Monte-Carlo thermal-hydraulic code BGCore

   Bilodid, Y., Kotlyar, D., Margulis, M., Fridman, E. & Shwageraus, E., 1 Gorff 2015, Yn: Annals of Nuclear Energy. 81, t. 34-40

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

2. Cyhoeddwyd

   Sequencing our way towards understanding global eukaryotic biodiversity

   Bik, H. M., Porazinska, D., Creer, S., Caporaso, J. G., Knight, R. & Thomas, W. K., 1 Ebr 2012, Yn: Trends in Ecology and Evolution. 27, 4, t. 233-243

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

3. Cyhoeddwyd

   What is the deal with the Green Deal: Will the new strategy help to improve European freshwater quality beyond the Water Framework Directive?

   Bierova, M., Glendell, M. & Bol, R., 15 Hyd 2021, Yn: Science of the Total Environment. 791, 148080.

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

4. Cyhoeddwyd

   Fine root dynamics in a tropical integrated crop-livestock-forestry system

   Bieluczyk, W., Piccolo, M. D. C., Pereira, M. G., Lambais, G. R., Germon, A., de Moraes, M. T., Soltangheisi, A., Camargo, P. B. D., Bosi, C., Bernardi, A. C. D. C., Pezzopane, J. R. M., Batista, I. & Cherubin, M. R., 1 Meh 2023, Yn: Rhizosphere. 26, 100695.

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

5. Cyhoeddwyd

   The sweet and the bitter: Intertwined positive and negative social impacts of a biodiversity offset

   Bidaud, C., Schreckenberg, K., Rabeharison, M., Ranjatson, P., Gibbons, J. & Jones, J. P. G., 2017, Yn: Conservation & Society. 15, 1, t. 1-13

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

6. Cyhoeddwyd

   The local costs of biodiversity offsets: comparing standards, policy and practice

   Bidaud, C., Schreckenberg, K. & Jones, J. P. G., Medi 2018, Yn: Land Use Policy. 77, t. 43-50

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

7. Cyhoeddwyd

   Voluntary biodiversity offset strategies in Madagascar

   Bidaud, C., Hrabanski, M. & Meral, P., 19 Maw 2015, Yn: Ecosystems. 15, t. 181-189

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

8. Cyhoeddwyd

   Investigating the association of fish abundance and biomass with cold-water corals in the deep Northeast Atlantic Ocean using a generalized linear modelling approach.

   Biber, M., Biber, M. F., Duineveld, G. C., Lavaleye, M. S., Davies, A. J., Berrgman, M. J. & Van den Beld, I. M., 28 Mai 2013, Yn: Deep Sea Research Part II: Topical Studies in Oceanography. 99, t. 134-145

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

9. Cyhoeddwyd

   Molecular phylogeny reveals distinct evolutionary lineages of the banded krait, Bungarus fasciatus (Squamata, Elapidae) in Asia

   Biazkula, L., Lalremsanga, H., Santra, V., Dhara, A., Ahmed, M. T., Mallick, Z., Kuttalam, S. R., Amarasinghe, A. A. T. & Malhotra, A., 4 Chwef 2023, Yn: Scientific Reports. 13, 1, 14 t., 2061.

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

10. Cyhoeddwyd

    Rapid assessment of forest canopy and light regime using smartphone hemispherical photography

    Bianchi, S., Calahan, C., Hale, S. & Gibbons, J., Rhag 2017, Yn: Ecology and Evolution. 7, 24, t. 10556-10566

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

11. Cyhoeddwyd

    Light-growth responses of Sitka spruce, Douglas fir and western hemlock regeneration under continuous cover forestry

    Bianchi, S., Hale, S., Cahalan, C., Arcangeli, C. & Gibbons, J., 15 Awst 2018, Yn: Forest Ecology and Management. 422, t. 241-252

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

12. Cyhoeddwyd

    Methods for predicting Sitka spruce natural regeneration presence and density in the UK

    Bianchi, S., Hale, S. & Gibbons, J., Mai 2019, Yn: iForest. 12, t. 279-288

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

13. Cyhoeddwyd

    Sub-40 GHz Broadband Polarization Chaos Generation Using Mutually Coupled Free-Running VCSELs

    Bian, H., Zhang, X., Li, P., Jia, Z., Ma, L., Xu, B., Shore, K. A., Qin, Y. & Wang, Y., 1 Chwef 2023, Yn: Photonics. 10, 2, t. 219 1 t.

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

14. Cyhoeddwyd

    Direct numerical simulation of internally heated natural convection in a hemispherical geometry

    Bian, B., Dovizio, D. & Villanueva, W., 1 Maw 2024, Yn: International Journal of Heat and Mass Transfer. 220, 124997.

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

15. Cyhoeddwyd

    Mineralization of organic nitrogen from farm manure applications

    Bhogal, A., Williams, J. R., Nicholson, F. A., Chadwick, D. R., Chambers, K. H. & Chambers, B. J., 1 Meh 2016, Yn: Soil Use and Management. 32, S1, t. 32-43

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

16. Cyhoeddwyd

    The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius

    Bhandari, K., 1 Rhag 2020, Yn: Journal of Natural History. 54, 45-46, t. 2961-2977 17 t.

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

17. Cyhoeddwyd

    Nearest prototype classifier designs: An experimental study.

    Bezdek, J. C. & Kuncheva, L. I., 1 Rhag 2001, Yn: International Journal of Intelligent Systems. 16, 12, t. 1445-1473

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

18. Cyhoeddwyd

    Spectroelectrochemical and electrical characterization of low bandgap polymers

    Beyer, R., Kalaji, M., Kingscote-Burton, G., Murphy, P. J., Pereira, V. M. S. C., Taylor, D. M. & Williams, G. O., 15 Ion 1998, Yn: Synthetic Metals. 92, 1, t. 25-31 7 t.

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

19. Cyhoeddwyd

    Non‐native plant invasion can accelerate global climate change by increasing wetland methane and terrestrial nitrous oxide emissions

    Beyene, B. B., Li, J., Yuan, J., Dong, Y., Liu, D., Chen, Z., Kim, J., Freeman, C., Kang, H. & Ding, W., Medi 2022, Yn: Global Change Biology. 28, 18, t. 5453-5468 16 t.

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

20. Cyhoeddwyd

    Climatic zone effects of non-native plant invasion on CH4 and N2O emissions from natural wetland ecosystems

    Beyene, B. B., Li, J., Yuan, J., Liu, D., Chen, Z., Kim, J., Kang, H., Freeman, C. & Ding, W., 1 Ion 2024, Yn: Science of the Total Environment. 906, 167855.

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

21. Cyhoeddwyd

    Structure-function relationships of the antigenicity of mycolic acids in tuberculosis patients.

    Beukes, M., Lemmer, Y., Deysel, M., Al-Dulayymi, J., Baird, M. S., Koza, G., Maza Iglesias, M., Schubert-Rowles, R., Theunissen, C., Grooten, J., Toschi, G., Roberts, V. V., Pilcher, L., Van Wyngaardt, S., Mathebula, N., Balogun, M., Stoltz, A. C. & Verschoor, J., 1 Tach 2010, Yn: Chemistry and Physics of Lipids. 163, 8, t. 800-808

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

22. Cyhoeddwyd

    Structure-function relationships of the antigenicity of mycolic acids in tuberculosis patients (vol 163, pg 800, 2010)

    Beukes, M., Lemmer, Y., Deysel, M., Al Dulayymi, J. R., Baird, M. S., Koza, G., Iglesias, M. M., Rowles, R. R., Theunissen, C., Grooten, J., Toschi, G., Roberts, V. V., Pilcher, L., Van Wyngaardt, S., Mathebula, N., Balogun, M., Stoltz, A. C. & Verschoor, J. A., 1 Chwef 2011, Yn: Chemistry and Physics of Lipids. 164, 2, t. 175 1 t.

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

23. Cyhoeddwyd

    The efficiency and selectivity of spring-toothed scallop dredges: a comparison of direct and indirect methods of assessment.

    Beukers-Stewart, B. D., Jenkins, S. R. & Brand, A. R., 1 Meh 2001, Yn: Journal of Shellfish Research. 20, 1, t. 121-126

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

24. Cyhoeddwyd

    Epistatic regulation of growth in Atlantic salmon revealed: a QTL study performed on the domesticated-wild interface

    Besnier, F., Solberg, M. F., Harvey, A., Carvalho, G., Bekkevold, D., Taylor, M. I., Creer, S., Nielsen, E. E., Skaala, O., Ayllon, F., Dahle, G. & Glover, K. A., 7 Chwef 2020, Yn: BMC Genetics. 21, 1, 13.

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

25. Cyhoeddwyd

    Phase Equilibria and Thermochemistry of Advanced Fuels: Modeling Burnup Behavior: Technical Report

    Besmann, T. M., McMurray, J., Nelson, A., White, J., Lahoda, E., Middleburgh, S., Claisse, A., Ulrich, T., Johnson, K., Kocevski, V., Adorno-Lopez, D. & Vogel, S., 31 Maw 2020, University of South Carolina Press.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

26. Cyhoeddwyd

    Michael and substitution reactions of bicyclic tetronic, tetramic and thiotetronic esters

    Bertucco, A., Brennan, J., Fachini, M., Kluge, S., J. Murphy, P., Pasutto, F., Signorini, R. & Lloyd Williams, H., 1994, Yn: Tetrahedron. 50, 27, t. 8237-8252 16 t.

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

27. Cyhoeddwyd

    Substitution and Michael reactions of bicyclic tetronic, tetramic and thiotetronic esters

    Bertucco, A., Brennan, J., Fachini, M., Kluge, S., Murphy, P. J., Pasutto, F., Signorini, R. & Williams, H. L., 1993, Yn: Journal of the Chemical Society, Perkin Transactions 1. 16, t. 1831-1833 3 t.

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

28. Cyhoeddwyd

    The management of grey squirrel populations in Europe: evolving best practice

    Bertolino, S., Lurz, P. W. W., Shuttleworth, C., Martinoli, A. & Wauters, L. A., 2016, The grey squirrel: ecology and management in Europe . Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 495-516

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

29. Cyhoeddwyd

    The growth of a Welsh strain of Arctic charr Salvelinus alpinus (L.) and investigations into its aquaculture potential.

    Berrill, I. K. & McCarthy, I. D., 1 Meh 2008, Yn: Journal of Fish Biology. 72, 10, t. 2700-2706

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

30. Cyhoeddwyd

    Molecular characterization and prevalence of two capulaviruses: Alfalfa leaf curl virus from France and Euphorbia caput-medusae latent virus from South Africa

    Bernardo, P., Muhire, B., Francois, S., Deshoux, M., Hartnady, P., Farkas, K., Kraberger, S., Filloux, D., Fernandez, E., Galzi, S., Ferdinand, R., Granier, M., Marais, A., Blasco, P. M., Candresse, T., Escriu, F., Varsani, A., Harkins, G. W., Martin, D. P. & Roumagnac, P., 1 Meh 2016, Yn: Virology. 493, t. 142-153

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

31. Cyhoeddwyd

    Multivalent glycoconjugates as anti-pathogenic agents

    Bernardi, A., Jimenez-Barbero, J., Casnati, A., De Castro, C., Darbre, T., Fieschi, F., Finne, J., Funken, H., Jaeger, K-E., Lahmann, M., Lindhorst, T. K., Marradi, M., Messner, P., Molinaro, A., Murphy, P. V., Nativi, C., Oscarson, S., Penades, S., Peri, F., Pieters, R. J., Renaudet, O., Reymond, J-L., Richichi, B., Rojo, J., Sansone, F., Schaeffer, C., Turnbull, W. B., Velasco-Torrijos, T., Vidal, S., Vincent, S., Wennekes, T., Zuilhof, H. & Imberty, A., 2013, Yn: Chemical Society Reviews. 42, 11, t. 4709-4727

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

32. Cyhoeddwyd

    Temporal stability of genetic population structure in the New Zealand snapper, Pagrus auratus, and relationship to coastal currents

    Bernal-Ramirez, J. H., Adcock, G. J., Hauser, L., Carvalho, G. R. & Smith, P. J., 1 Maw 2003, Yn: Marine Biology. 142, 3, t. 567-574

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

33. Cyhoeddwyd

    Current approaches and future trends in compost quality criteria for agronomic, environmental and human health benefits

    Bernal, M. P., Sommer, S., Chadwick, D., Qing, C., Li, G. & Michel Jr, F., 2017, Advances in Agronomy. Cyfrol 144. t. 143-233

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

34. Cyhoeddwyd

    Using knowledge from fishers and fisheries scientists to identify possible groundfish 'Essential Fish Habitats'

    Bergmann, M., Hinz, H., Blyth, R. E., Kaiser, M. J., Rogers, S. I. & Armstrong, M., 1 Chwef 2004, Yn: Fisheries Research. 66, 2-3, t. 373-379

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

35. Cyhoeddwyd

    Activated carbon amendments to soil alters nitrification rates in Scots pine forests.

    Berglund, L. M., DeLuca, T. H. & Zackrisson, O., 1 Rhag 2004, Yn: Soil Biology and Biochemistry. 36, 12, t. 2067-2073

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

36. Cyhoeddwyd

    Old dog, new tricks: 2,2 '-biphenol as a bridging and book-end ligand in discrete and extended Co(II) architectures

    Berg, N., Taylor, S. M., Prescimone, A., Brechin, E. K. & Jones, L. F., 2012, Yn: CrystEngComm. 14, 8, t. 2732-2738

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

37. Cyhoeddwyd

    Artificial Light at Night Causes Top‐down and Bottom‐up Trophic Effects on Invertebrate Populations

    Bennie, J., Davies, T. W., Cruse, D., Inger, R. & Gaston, K. J., Tach 2018, Yn: Journal of Applied Ecology. 55, 6, t. 2698–2706

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

38. Cyhoeddwyd

    The importance of time of spraying, desiccant type and harvest time on industrial fibre production from stand-retted fibre flax (Linum usitatissimum).

    Bennett, S. J., Wright, D. & Edwards-Jones, G., 1 Rhag 2007, Yn: Journal of Agricultural Science. 145, 6, t. 565-576

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

39. Cyhoeddwyd

    Effect of variety, seed rate and time of cutting on fibre yield of dew-retted hemp.

    Bennett, S. J., Snell, R. & Wright, D., 1 Gorff 2006, Yn: Industrial Crops and Products. 24, 1, t. 79-86

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

40. Cyhoeddwyd

    Genetic variation in fibre flax varieties grown in North Wales.

    Bennett, S. J., Dimmock, J. P. & Wright, D., 1 Ion 2004, t. 491-492.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

41. Cyhoeddwyd

    Characterization of the hydrides in Stryker's reagent: [HCuP(C 6H5)3]6

    Bennett, E. L., Murphy, P. J., Imberti, S. & Parker, S. F., 26 Chwef 2014, Yn: Inorganic Chemistry. 53, 6, t. 2963-2967 5 t.

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

42. Cyhoeddwyd

    Structure and spectroscopy of CuH prepared via borohydride reduction

    Bennett, E. L., Wilson, T., Murphy, P. J., Refson, K., Hannon, A. C., Imberti, S., Callear, S. K., Chass, G. A. & Parker, S. F., 7 Tach 2015, Yn: Acta Crystallographica Section B. 7, 6, t. 608-612

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

43. Cyhoeddwyd

    How the Surface Structure Determines the Properties of CuH

    Bennett, E. L., Bennett, E., Wilson, T., Murphy, P. J., Refson, K., Hannon, A. C., Imberti, S., Callear, S. K., Chass, G. A. & Parker, S. F., 11 Chwef 2015, Yn: Inorganic Chemistry. 54, 5, t. 2213-2220

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

44. Cyhoeddwyd

    Extent of north Pen Llyn Modiolus modiolus reef – potential use of acoustic methods

    Bennell, J. D., Sanderson, W. G. (gol.), Holt, R. H. (gol.), Kay, I. (gol.), Wyn, G. (gol.) & McMath, A. J. (gol.), 1 Ion 2001, 2001 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

45. Cyhoeddwyd

    Establishment of fixed stations on the north Pen Llyn horse mussel (Modiolus modiolus) and Sarn Badrig reefs.

    Bennell, J. D., Sanderson, W. G. (gol.), Holt, R. H. (gol.), Kay, I. (gol.), Wyn, G. (gol.) & McMath, A. J. (gol.), 1 Ion 2001, 2001 gol. Unknown.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

46. Cyhoeddwyd

    Confusion reigns? A review of marine megafauna interactions with tidal stream environments

    Benjamins, S., Dale, A. C., Hastie, G., Waggitt, J. J., Lea, M-A., Scott, B. & Wilson, B., 2015, Oceanography and Marine Biology: An Annual Review. Cyfrol 53. t. 1-54

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

47. Cyhoeddwyd

    Exploring controls of the early and stepped deglaciation on the western margin of the British Irish Ice Sheet.

    Benetti, S., Chiverrell, R. C., Ó Cofaigh, C., Burke, M., Medialdea, A., Small, D., Ballantyne, C., Bateman, M., Callard, S. L., Wilson, P., Fabel, D., Clark, C., Arosio, R., Bradley, S. L., Dunlop, P., Ely, J. C., Gales, J., Livingstone, S. J., Moreton, S., Purcell, C., Saher, M., Schiele, K., Van Landeghem, K. & Weilbach, K., Gorff 2021, Yn: Journal of Quaternary Science. 36, 5, t. 833-870

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

48. E-gyhoeddi cyn argraffu

    Advanced control scheme and dynamic phasor modelling of grid-tied droop-controlled inverters

    Bendib, A., Kherbachi, A., Chouder, A., Ahmed, H. & Kara, K., 4 Hyd 2022, (E-gyhoeddi cyn argraffu) Yn: IET Renewable Power Generation.

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

49. Cyhoeddwyd

    Cholesteroid nature of free mycolic acids from M. tuberculosis.

    Benadie, Y., Deysel, M., Siko, D. G., Roberts, V. V., Van Wyngaardt, S., Thanyani, S. T., Sekanka, G., Ten Bokum, A. M., Collett, L. A., Grooten, J., Baird, M. S. & Verschoor, J. A., 1 Ebr 2008, Yn: Chemistry and Physics of Lipids. 152, 2, t. 95-103

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

50. Cyhoeddwyd

    Novel polyphenol oxidase mined from a metagenome expression library of bovine rumen: biochemical properties, structural analysis, and phylogenetic relationships

    Beloqui, A., Pita, M., Polaina, J., Martínez-Arias, A., Golyshina, O. V., Zumárraga, M., Yakimov, M. M., García-Arellano, H., Alcalde, M., Fernández, V. M., Elborough, K., Andreu, J. M., Ballesteros, A., Plou, F. J., Timmis, K. N., Ferrer, M. & Golyshin, P. N., 11 Awst 2006, Yn: Journal of Biological Chemistry. 281, 32, t. 22933-42 10 t.

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