Porth Ymchwil

Ysgol Gwyddorau Amgylcheddol a Naturiol

5151 - 5200 o blith 5,650Maint y tudalen: 50
Trefnu yn ôl: Primeiro autor
  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. Cyhoeddwyd

    Novel Hybrid Esterase-Haloacid Dehalogenase Enzyme

    Beloqui, A., Polaina, J., Maria Vieites, J., Reyes-Duarte, D., Torres, R., Golyshina, O. V., Chernikova, T. N., Waliczek, A., Aharoni, A., Yakimov, M. M., Timmis, K. N., Golyshin, P. N. & Ferrer, M., 16 Awst 2010, Yn: ChemBioChem. 11, 14, t. 1975-1978

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

  22. Cyhoeddwyd

    Diversity of glycosyl hydrolases from cellulose-depleting communities enriched from casts of two earthworm species.

    Beloqui, A., Nechitaylo, T. Y., Lopez-Cortes, N., Ghazi, A., Guazzaroni, M. E., Polaina, J., Strittmatter, A. W., Reva, O., Waliczek, A., Yakimov, M. M., Golyshina, O. V., Ferrer, M. & Golyshin, P. N., 1 Medi 2010, Yn: Applied and Environmental Microbiology. 76, 17, t. 5934-5946

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

  23. Cyhoeddwyd

    Recent trends in industrial microbiology.

    Beloqui, A., De Maria, P. D., Golyshin, P. N. & Ferrer, M., 1 Meh 2008, Yn: Current Opinion in Microbiology. 11, 3, t. 240-248

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

  24. Cyhoeddwyd

    Dŵr Uisce Climate Action Hackathon: A Cool Connection

    Bello-Dambatta, A., Bellini, R., Coughlan, P., McNabola, A., Dreyer-Gibney, K. & Murali, M., Mai 2022.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Crynodeb

  25. Cyhoeddwyd
  26. Heb ei Gyhoeddi

    Improving water-related energy efficiency in wet leisure centres in Denbighshire County Council

    Bello-Dambatta, A. & Williams, P., Ebr 2020, (Heb ei Gyhoeddi) 30 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr

  27. Cyhoeddwyd

    Energy efficiency through water use efficiency in leisure centres

    Bello-Dambatta, A. & Williams, P., Mai 2022.

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

  28. Heb ei Gyhoeddi

    Water-Energy Nexus: Efficiencies and Sustainability in Demand Management

    Bello-Dambatta, A. & Williams, P., 8 Medi 2019, (Heb ei Gyhoeddi) Global Network for Researchers.

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

  29. Cyhoeddwyd

    Sprouting of trees in Jamaican montane forests after a hurricane

    Bellingham, P. J., Tanner, E. V. J. & Healey, J., 1994, Yn: Journal of Ecology. 82, 4, t. 747-758

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

  30. Cyhoeddwyd

    Endemic trees in a tropical biodiversity hotspot imperilled by an invasive tree

    Bellingham, P. J., Tanner, E. V. J., Martin, P. H., Healey, J. & Burge, O. R., Ion 2018, Yn: Biological Conservation. 217, 1, t. 47-53

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

  31. Cyhoeddwyd

    Damage and responsiveness of Jamaican montane tree species after disturbance by a hurricane

    Bellingham, P. J., Tanner, E. V. J. & Healey, J., 1995, Yn: Ecology. 76, 8, t. 2562-2580

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

  32. Cyhoeddwyd

    Hurricanes need not cause high mortality: the effects of Hurricane Gilbert on forests in Jamaica

    Bellingham, P. J., Kapos, V., Varty, N., Healey, J., Tanner, E. V. J., Kelly, D. L., Dalling, J. W., Burns, L. S., Lee, D. & Sidrak, G., 1992, Yn: Journal of Tropical Ecology. 8, 2, t. 217-223

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

  33. Cyhoeddwyd

    Hurricane disturbance accelerates invasion by the alien tree Pittosporum undulatum in Jamaican rain forests.

    Bellingham, P. J., Tanner, E. V. & Healey, J. R., 1 Rhag 2005, Yn: Journal of Vegetation Science. 16, 6, t. 675-684

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

  34. Cyhoeddwyd

    Nitrous oxide emissions from cattle excreta applied to a Scottish grassland: Effects of soil and climatic conditions and a nitrification inhibitor

    Bell, M. J., Rees, R. M., Cloy, J. M., Topp, C. F., Bagnall, A. & Chadwick, D. R., 10 Rhag 2014, Yn: Science of the Total Environment. 508, t. 343-353

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

  35. Cyhoeddwyd

    Nitrous oxide emissions from fertilised UK arable soils: Fluxes, emission factors and mitigation

    Bell, M. J., Hinton, N., Cloy, J. M., Topp, C. F., Rees, R. M., Cardenas, L., Scott, T., Webster, C., Ashton, R. W., Whitmore, A. P., Williams, J. R., Balshaw, H., Paine, F., Goulding, K. W. & Chadwick, D. R., 17 Gorff 2015, Yn: Agriculture, Ecosystems and Environment. 212, t. 134-147

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

  36. Cyhoeddwyd

    Quantifying N2O emissions from intensive grassland production: the role of synthetic fertilizer type, application rate, timing and nitrification inhibitors

    Bell, M. J., Cloy, J. M., Topp, C. F. E., Ball, B. C., Bagnall, A., Rees, R. M. & Chadwick, D. R., 1 Gorff 2016, Yn: Journal of Agricultural Science. 154, 5, t. 812-827

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

  37. Cyhoeddwyd

    How do emission rates and emission factors for nitrous oxide and ammonia vary with manure type and time of application in a Scottish farmland?

    Bell, M. J., Hinton, N. J., Cloy, J. M., Topp, C. F. E., Rees, R. M., Williams, J. R., Misselbrook, T. H. & Chadwick, D. R., 15 Chwef 2016, Yn: Geoderma. 264, t. 81-93

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

  38. Cyhoeddwyd

    Sensitivity of peatland litter decomposition to changes in temperature and rainfall

    Bell, M., Ritson, J. P., Verhoef, A., Brazier, R. E., Templeton, M. R., Graham, N., Freeman, C. & Clark, J. M., 1 Rhag 2018, Yn: Geoderma. 331, t. 29-37

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

  39. Cyhoeddwyd

    Financial incentives often fail to reconcile agricultural productivity and pro-conservation behavior.

    Bell, A. R., Rakotonarivo, O. S., Bhargava, A., Duthie, A. B., Zhang, W., Sargent, R., Lewis, A. R. & Kipchumba, A., 8 Chwef 2023, Yn: Communications Earth and Environment. 4, 27, 27.

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

  40. Cyhoeddwyd

    Environmental correlates of population differentiation in Atlantic herring

    Bekkevold, D., Aandre, C., Dahlgren, T. G., Clausen, L. A., Torstensen, E., Mosegaard, H., Carvalho, G. R., Christensen, T. B., Norlinder, E. & Ruzzante, D. E., 1 Rhag 2005, Yn: Evolution. 59, 12, t. 2656-2668

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

  41. Cyhoeddwyd

    Gene-associated markers can assign origin in a weakly structured fish, Atlantic herring

    Bekkevold, D., Helyar, S. J., Limborg, M. T., Nielsen, E. E., Hemmer-Hansen, J., Clausen, L. A. & Carvalho, G. R., 23 Chwef 2015, Yn: ICES Journal of Marine Science. 72, 6, t. 1790-1810

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

  42. Cyhoeddwyd

    PLLA‐Grafted Gelatin Amphiphilic Copolymer and Its Self‐Assembled Nano Carrier for Anticancer Drug Delivery

    Beibei, D., Tiantang, F., Jiafeng, L., Qin, Z., Wuyou, Y., Wang, W., Tai, H. & Zhongyong, F., 5 Maw 2019, Yn: Macromolecular Chemistry and Physics. 220, 5, 1800528.

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

  43. Cyhoeddwyd

    The history and future of agroforestry research and development: policy impacts and needs.

    Beer, J., Ibrahim, M., Sinclair, F. L., Mery, G. (gol.), Alfaro, R. (gol.), Kanninen, M. (gol.) & Lobovikov, M. (gol.), 1 Ion 2005, Forests in the global balance: changing paradigms. 2005 gol. IUFRO, t. 151-160

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

  44. Cyhoeddwyd

    Synthesis and characterization of amine adducts of tri(4-tolyl)boroxine and tri(3,5-xylyl)boroxine: molecular structure of (4-MeC6H4)3B3O3·cyclohexylamine

    Beckett, M., STRICKLAND, GC., VARMA, KS., HIBBS, DE., HURSTHOUSE, MB. & MALIK, KMA., 1995, Yn: Polyhedron. 14, 19, t. 2623-2630 8 t.

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

  45. Cyhoeddwyd

    Coordination chemistry of bis(3-aminopropyl)phenylphosphine (bap): reactions of bap with some d6 metal complexes of molybdenum(0), tungsten(0) and platinum(IV)

    Beckett, M., Cassidy, D. P. & Duffin, A. J., 1991, Yn: Inorganica Chimica Acta. 189, 2, t. 229-232 4 t.

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

  46. Cyhoeddwyd

    Pentaborate(1-) Salts and a Tetraborate(2-) Salt Derived from C 2- or C 3-Linked Bis(alkylammonium) Dications: Synthesis, Characterization, and Structural (XRD) Studies.

    Beckett, M., Meena, B., Rixon, T., Coles, S. & Horton, P., Ion 2020, Yn: Molecules. 25, 1, t. 53

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

  47. Cyhoeddwyd

    Synthesis and characterization of amine adducts of tri(4-bromophenyl)boroxine, tri(3-nitrophenyl)boroxine, and tri(3-aminophenyl)boroxine; molecular strcture of 3-picoline.tri(4-bromophenyl)boroxine.

    Beckett, M., Hibbs, D., Hursthouse, MI., Malik, K. M. A., Varma, K. S. & Owen, P., 1998, Yn: Main Group Chemistry. 2, t. 251-258 8 t.

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

  48. Cyhoeddwyd

    A computer simulation of the solvation of a solvatochromic pyridinium betaine

    Beckett, M. & Dawber, J. G., 1989, Yn: Journal of the Chemical Society: Faraday Transactions I. 85, t. 727-733 7 t.

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

  49. Cyhoeddwyd

    Synthesis, XRD studies and NLO properties of [p-H2NC6H4CH2NH3][B5O6(OH)4].1/2H2O and NLO properties of some related pentaborate(1-) salts

    Beckett, M., Coles, S. J., Horton, P. N., Jones, C. & Krueger, K., Gorff 2017, Yn: Journal of Cluster Science. 28, 4, t. 2087-2095

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

  50. Cyhoeddwyd

    Structural (XRD) Characterization and an Analysis of H-Bonding Motifs in Some Tetrahydroxidohexaoxidopentaborate(1-) Salts of N-Substituted Guanidinium Cations

    Beckett, M., Coles, S. J., Horton, P. & Rixon, T., 6 Ebr 2023, Yn: Molecules. 28, 7, 15 t., 3273.

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

Blaenorol 1...100 101 102 103 104 105 106 107 ...113 Nesaf