1. Cyhoeddwyd

   Analyzing procedural equity in government-led community-based forest management

   Friedman, R., Rhodes, J., Dean, A., Law, E., Santika, T., Budiharta, S., Hutabarat, J. A., Indrawan, T. P., Kusworo, A., Meijaard, E., St John, F. A. V., Struebig, M. & Wilson, K. A., Medi 2020, Yn: Ecology and Society. 25, 3, 16.

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

2. Cyhoeddwyd

   Beyond the community in participatory forest management: A governance network perspective

   Friedman, R., Guerrero, R. S., McAllister, R. R. J., Rhodes, J., Santika, T., Budiharta, S., Indrawan, T. P., Hutabarat, J. A., Kusworo, A., Yogaswara, H., Meijaard, E., St John, F. A. V., Struebig, M. J. & Wilson, K. A., 1 Medi 2020, Yn: Land Use Policy. 97, 104738.

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

3. Cyhoeddwyd

   Current and future genetic technologies for fisheries and aquaculture: implications for the work of FAO

   Friedman, KJ., Bartley, DM., Rodríguez-Ezpeleta, N., Mair, GC., Ban, N., Beveridge, M., Carolsfeld, J., Carvalho, G., Cowx, I., Dean, G., Glazov, E., Leber, K., Loftus, R., Martinsohn, J., Olesen, I., Soto, E., Van Eenennaam, A. L. & Vigar, JR., 2022. 56 t.

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

4. Cyhoeddwyd

   Towards bioremediation of toxic unresolved complex mixtures of hydrocarbons: identification of bacteria capable of rapid degradation of alkyltetralins.

   Frenzel, M., James, P., Burton, S. K., Rowland, S. J. & Lappin-Scott, H. M., 1 Ebr 2009, Yn: Journal of Soils and Sediments. 9, 2, t. 129-136

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

5. Cyhoeddwyd

   Biosensors in bioprocess monitoring and control : Current trends and future prospects

   French, E., Gwenin, C. D., El-Mansi, E. M. (gol.), Bryce, C. F. (gol.), Demain, A. L. (gol.) & Allman, A. R. (gol.), 12 Ion 2012, Fermentation Microbiology and Biotechnology (3rd edition). 2012 gol. CRC Press

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

6. Cyhoeddwyd

   Evidence for cryptic sex in parthenogenetic stick insects of the genus Timema

   Freitas, S., Parker, D. J., Labédan, M., Dumas, Z. & Schwander, T., 27 Medi 2023, Yn: Proceedings of the Royal Society B: Biological Sciences. 290, 2007, 11 t., 20230404.

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

7. Cyhoeddwyd

   Evaluating taxonomic inflation: towards evidence-based species delimitation in Eurasian vipers (Serpentes: Viperinae)

   Freitas, I., Ursenbacher, S., Mebert, K., Zinenko, O., Schweiger, S., Wüster, W., Brito, J. C., Crnobrnja-Isailović, J., Halpern, B., Fahd, S., Santos, X., Pleguezuelos, J. M., Joger, U., Orlov, N., Mizsei, E., Lourdais, O., Zuffi, M. A. L., Strugariu, A., Zamfirescu, Ş. R., Martínez-Solano, Í., Velo-Antón, G., Kaliontzopoulou, A. & Martínez-Freiría, F., 30 Meh 2020, Yn: Amphibia-Reptilia. 41, 3, t. 285-311 27 t.

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

8. Cyhoeddwyd

   The use of fluorogenic substrates for measuring enzyme activity in peatlands

   Freeman, C., Liska, G., Ostle, N. J. & Lock, M. A., 1 Awst 1995, Yn: Plant and Soil. 175, 1, t. 147-152

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

9. Cyhoeddwyd

   An enzymatic 'latch' on a global carbon store;- a shortage of oxygen locks up carbon in peatlands by restraining a single enzyme.

   Freeman, C., Ostle, N. J. & Kang, H., 11 Ion 2001, Yn: Nature. 409, 6817, t. 149

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

10. Cyhoeddwyd

    Export of organic carbon from peat soils.

    Freeman, C., Evans, C. D., Monteith, D. T., Reynolds, B. & Fenner, N., 23 Awst 2001, Yn: Nature. 412, 6849, t. 785

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

11. Cyhoeddwyd

    Contrasted effects of simulated drought on the production and oxidation of methane in a mid-Wales wetland.

    Freeman, C., Nevison, G. B., Kang, H., Hughes, S., Reynolds, B. & Hudson, J. A., 1 Ion 2002, Yn: Soil Biology and Biochemistry. 34, 1, t. 61-67

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

12. Cyhoeddwyd

    Peatland geoengineering: an alternative approach to terrestrial carbon sequestration

    Freeman, C., Fenner, N. & Shirsat, A. H., 13 Medi 2012, Yn: Philosophical Transactions of the Royal Society A. 370, 1974, t. 4404-4421

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

13. Cyhoeddwyd

    Export of dissolved organic carbon from peatlands under elevated carbon dioxide levels.

    Freeman, C., Fenner, N., Ostle, N. J., Kang, H., Dowrick, D. J., Reynolds, B., Lock, M. A., Sleep, D., Hughes, S. & Hudson, J., 8 Gorff 2004, Yn: Nature. 430, 6996, t. 195-198

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

14. Cyhoeddwyd

    A regulatory role for phenol oxidase during decomposition in peatlands.

    Freeman, C., Ostle, N., Fenner, N. & Kang, H., 1 Hyd 2004, Yn: Soil Biology and Biochemistry. 36, 10, t. 1663-1667

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

15. Cyhoeddwyd

    Effects of elevated atmospheric CO2 concentrations on soil microorganisms.

    Freeman, C., Kim, S. Y., Lee, S. H. & Kang, H., 1 Rhag 2004, Yn: Journal of Microbiology. 42, 4, t. 267-277

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

16. Cyhoeddwyd

    Responsible agriculture must adapt to the wetland character of mid-latitude peatlands

    Freeman, B. W. J., Evans, C. D., Musarika, S., Morrison, R., Newman, T. R., Page, S. E., Wiggs, G. F. S., Bell, N. G. A., Styles, D., Wen, Y., Chadwick, D. R. & Jones, D. L., 1 Meh 2022, Yn: Global Change Biology. 28, 12, t. 3795-3811 17 t.

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

17. Cyhoeddwyd

    Provenance variation in seed morphological characteristics, germination and early seedling growth of Faidherbia albida

    Fredrick, C., Muthuri, C., Ngamau, K. & Sinclair, F., Mai 2015, Yn: Journal of Horticulture and Forestry. 7, 5, t. 127-140 14 t.

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

18. Cyhoeddwyd

    Provenance and pretreatment effect on seed germination of six provenances of Faidherbia albida (Delile) A. Chev

    Fredrick, C., Muthuri, C., Ngamau, K. & Sinclair, F., Rhag 2017, Yn: Agroforestry Systems. 91, 6, t. 1007-1017

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

19. Cyhoeddwyd

    Food Access Deficiencies in Sub-saharan Africa: Prevalence and Implications for Agricultural Interventions

    Fraval, S., Hammond, J., Bogard, J. R., Ng'endo, M., van Etten, J., Herrero, M., Oosting, S. J., de Boer, I. J. M., Lannerstad, M., Teufel, N., Lamanna, C., Rosenstock, T. S., Pagella, T., Vanlauwe, B., Dontsop-Nguezet, P. M., Baines, D., Carpena, P., Njingulula, P., Okafor, C., Wichern, J., Ayantunde, A., Bosire, C., Chesterman, S., Kihoro, E., Rao, E. J. O., Skirrow, T., Steinke, J., Stirling, C. M., Yameogo, V. & van Wijk, M. T., 19 Tach 2019, Yn: Frontiers in Sustainable Food Systems. 3, 104.

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

20. Cyhoeddwyd

    Preference classes in society for coastal marine protected areas

    Frau, A., Gibbons, J., Hinz, H., Edwards-Jones, G. & Kaiser, M., 23 Ebr 2019, Yn: PeerJ. PubMed 31065453 .

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

21. Cyhoeddwyd

    A multidisciplinary approach in the design of marine protected areas: Integration of science and stakeholder based methods

    Frau, A. R., Possingham, H. P., Edwards-Jones, G., Klein, C. J., Segan, D. & Kaiser, M. J., 24 Tach 2014, Yn: Ocean and Coastal Management. 103, t. 86-93

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

22. Cyhoeddwyd

    A review of Pinaceae resistance mechanisms against needle and shoot pathogens with a focus on the Dothistroma–Pinus interaction

    Fraser, S., Martin-Garcia, J., Perry, A., Kabir, M. S., Owen, T., Solla, A., Brown, A. V., Bulman, L. S., Barnes, I., Hale, M., Vasconcelos, M. W., Lewis, K. J., Doğmuş-Lehtijarvi, H. T., Markovskaja, S., Woodward, S. & Bradshaw, R. E., Hyd 2016, Yn: Forest Pathology. 46, 5, t. 453-471

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

23. Cyhoeddwyd

    Climate of the Mount Cameroon Region: Long and medium term rainfall, temperature and sunshine data

    Fraser, P., Hall, J. & Healey, J., 1998, University of Wales, Bangor. 56 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adoddiad Arall

24. Cyhoeddwyd

    Seedling Identification: a Guide to the Tree Species of Mount Cameroon

    Fraser, P. J., Healey, J. & Ndam, N., 1999, Bangor: University of Wales Bangor. 531 t. (SAFS Publication; Rhif 11)

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr

25. Cyhoeddwyd

    Plant succession on the 1922 lava flow of Mount Cameroon

    Fraser, P., Banks, H., Brodie, S., Cheek, M., Dawson, S., Healey, J., Marsden, J., Ndam, N., Nning, J. & McRobb, A., 1999, African Plants: Biodiversity, Taxonomy and Uses: Proceedings of the 1997 AGTFAT Congress, Harare, Zimbabwe. Timberlake, J. & Kativu, S. (gol.). Royal Botanic Gardens, Kew, t. 253-262

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

26. Cyhoeddwyd

    A new black-bellied snake (Pseudoxyrhophiinae: Liophidium) from western Madagascar, with notes on the genus Pararhadinaea.

    Franzen, M., Jones, J. P. G., Raselimanana, A. P., Nagy, Z. T., D'Cruze, N., Glaw, F. & Vences, M., 1 Ion 2009, Yn: Amphibia-Reptilia. 30, 2, t. 173-183

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

27. Cyhoeddwyd

    Phosphatase activity does not limit the microbial use of low molecular weight organic-P substrates in soil.

    Fransson, A. M. & Jones, D. L., 1 Mai 2007, Yn: Soil Biology and Biochemistry. 39, 5, t. 1213-1217

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

28. Cyhoeddwyd

    Aluminium complexation suppresses citrate uptake by acid forest soil microorganisms.

    Fransson, A. M., Vinogradoff, S., Godbold, D. L., Van Hees, P. A. & Jones, D. L., 1 Chwef 2004, Yn: Soil Biology and Biochemistry. 36, 2, t. 353-357

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

29. Cyhoeddwyd

    Geographical Ecology of Dry Forest Tree Communities in the West Indies

    Franklin, J., Andrade, R., Daniels, M. L., Fairbairn, P., Fandino, M. C., Gillespie, T. W., González, G., González, O., Imbert, D., Kapos, V., Kelly, D. L., Marcano-Vega, H., Meléndez-Ackerman, E. J., McLaren, K. P., McDonald, M. A., Ripplinger, J., Rojas-Sandoval, J., Ross, M. S., Ruiz, J., Steadman, D. W., Tanner, E. V. J., Terrill, I. & Vennetier, M., Mai 2018, Yn: Journal of Biogeography. 45, 5, t. 1168-1181

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

30. Cyhoeddwyd

    Hunters and hunting across indigenous and colonist communities at the forest agriculture interface: an ethnozoological study from the Peruvian Amazon

    Francesconi, W., Bax, V., Blundo-Canto, G., Willcock, S., Cuadros, S., Vanegas, M., Quintero, M. & Torres-Vitolas, C. A., 10 Awst 2018, Yn: Journal of Ethnobiology and Ethnomedicine . 14, 22 t., 54.

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

31. Cyhoeddwyd

    Mapping the spawning grounds of North Sea cod (Gadus morhua) by direct and indirect means.

    Fox, C. J., Taylor, M. I., Dickey-Collas, M., Fossum, P., Kraus, G., Rohlf, N., Munk, P., Van Damme, C. J., Bolle, L. J., Maxwell, D. L. & Wright, P. J., 1 Gorff 2008, Yn: Proceedings of The Royal Society B - Biological Sciences. 275, 1642, t. 1543-1548

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

32. Cyhoeddwyd

    TaqMan DNA technology confirms likely overestimation of cod (Gadus morhua L.) egg abundance in the Irish Sea: implications for the assessment of the cod stock and mapping of spawning areas using egg-based methods.

    Fox, C. J., Taylor, M. I., Pereyra, R., Villasan, M. I. & Rico, C., 1 Maw 2005, Yn: Molecular Ecology. 14, 3, t. 879-884

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

33. Cyhoeddwyd

    Isolation and characterisation of cellulose obtained by a two-stage treatment with organosolv and cyanamide activated hydrogen peroxide from wheat straw

    Fowler, P. A., Sun, R., Sun, X. F., Sun, R. C., Fowler, P. & Baird, M. S., 15 Maw 2004, Yn: Carbohydrate Polymers. 55, 4, t. 379-391

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

34. Cyhoeddwyd

    Characteristics of degraded hemicellulosic polymers obtained from steam exploded wheat straw.

    Fowler, P. A., Sun, R., Sun, X. F., Xu, F., Sun, R. C., Geng, Z. C., Fowler, P. & Baird, M. S., 7 Ebr 2005, Yn: Carbohydrate Polymers. 60, 1, t. 15-26

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

35. Cyhoeddwyd

    Characteristics of degraded cellulose obtained from steam-exploded wheat straw.

    Fowler, P. A., Sun, R., Sun, X. F., Xu, F., Sun, R. C., Fowler, P. & Baird, M. S., 17 Ion 2005, Yn: Carbohydrate Research. 340, 1, t. 97-106

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

36. Cyhoeddwyd

    Characteristics of degraded lignins obtained from steam exploded wheat straw.

    Fowler, P. A., Sun, R., Sun, X. F., Xu, F., Sun, R. C., Wang, Y. X., Fowler, P. & Baird, M. S., 1 Tach 2004, Yn: Polymer Degradation and Stability. 86, 2, t. 245-256

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

37. Cyhoeddwyd

    Fractional and structural characterization of hemicelluloses from perennial ryegrass (Lolium perenne) and cocksfoot grass (Dactylis glomerata)

    Fowler, P. A., Sun, R., Xu, F., Geng, Z. C., Sun, J. X., Liu, C. F., Ren, J. L., Sun, R. C., Fowler, P. & Baird, M. S., 4 Medi 2006, Yn: Carbohydrate Research. 341, 12, t. 2073-2082

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

38. Cyhoeddwyd

    Extraction and characterization of original lignin and hemicelluloses from wheat straw

    Fowler, P. A., Sun, R., Sun, X. F., Sun, R. C., Fowler, P. & Baird, M. S., 23 Chwef 2005, Yn: Journal of Agricultural and Food Chemistry. 53, 4, t. 860-870

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

39. Cyhoeddwyd

    Physicochemical characterisation of residual hemicelluloses isolated with cyanamide-activated hydrogen peroxide from organosolv pre-treated wheat straw.

    Fowler, P. A., Sun, R., Sun, X. F., Xu, F., Zhao, H., Sun, R. C., Fowler, P. & Baird, M. S., 1 Awst 2005, Yn: Bioresource technology . 96, 12, t. 1342-1349

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

40. Cyhoeddwyd

    Inhomogeneities in the chemical structure of sugarcane bagasse lignin.

    Fowler, P. A., Sun, R., Sun, J. X., Sun, X. F., Sun, R. C., Fowler, P. & Baird, M. S., 5 Tach 2003, Yn: Journal of Agricultural and Food Chemistry. 51, 23, t. 6719-6725

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

41. Cyhoeddwyd

    Comparative study of water-soluble and alkali-soluble hemicelluloses from perennial ryegrass leaves (Lolium peree)

    Fowler, P. A., Sun, R., Xu, F., Sun, J. X., Geng, Z. C., Liu, C. F., Ren, J. L., Sun, R. C., Fowler, P. & Baird, M. S., 2 Ion 2007, Yn: Carbohydrate Polymers. 67, 1, t. 56-65

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

42. Cyhoeddwyd

    Dynamics of dissolved organic matter in headwaters: comparison of headwater streams with contrasting DOM and nutrient composition

    Fovet, O., Cooper, D. M., Jones, D. L., Jones, T. G. & Evans, C. D., 24 Chwef 2020, Yn: Aquatic Sciences. 82, 2, 29.

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

43. Cyhoeddwyd

    Synthesis of the Lewis b pentasaccharide and a HAS-conjugate thereof.

    Fourniere, V., Skantz, L., Sajtos, F., Oscarson, S. & Lahmann, M., 22 Gorff 2010, Yn: Tetrahedron.

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

44. Cyhoeddwyd

    Molecular ecology of microbiomes in the wild: Common pitfalls, methodological advances and future directions

    Fountain-Jones, N. M., Giraud, T., Zinger, L., Bik, H., Creer, S. & Videvall, E., 12 Ion 2024, Yn: Molecular Ecology. 33, 2, e1723.

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

45. Cyhoeddwyd

    Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils

    Foster, A., Jones, D. L., Cooper, E. J. & Roberts, P., 11 Maw 2016, Yn: Polar Biology. t. 1-15

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

46. Cyhoeddwyd

    Ferrocenylmethylphosphanes and the Alpha Process for Methoxycarbonylation: The Original Story

    Fortune, K. M., Castel, C., Robertson, C. M., Horton, P. N., Light, M. E., Coles, S. J., Waugh, M., Clegg, W., Harrington, R. W. & Butler, I. R., 17 Gorff 2021, Yn: Inorganics. 9, 7, 57.

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

47. Cyhoeddwyd

    Can temperate forests deliver future wood demand and climate mitigation?

    Forster, E., Healey, J. & Styles, D., 14 Rhag 2023, Yn: Research Square. https://doi.org/10.21203/rs.3.rs-3681726/v1

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl

48. Cyhoeddwyd

    Linking construction timber carbon storage with land use and forestry management practices

    Forster, E., Healey, J., Dymond, C., Nwman, G., Davies, G. & Styles, D., 28 Hyd 2019, IOP Conference Series: Earth and Environmental Science. IOP Publishing, Cyfrol 323. 11 t. 012142. (IOP Conf. Series: Earth and Environmental Science; Cyfrol 323, Rhif 1).

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

49. Cyhoeddwyd

    Circular wood use can accelerate global decarbonisation but requires cross-sectoral coordination

    Forster, E., Healey, J., Styles, D. & Newman, G., 31 Maw 2023, 29 t. (Research Square).

    Allbwn ymchwil: Papur gweithio › Rhagargraffiad

50. Cyhoeddwyd

    Circular wood use can accelerate global decarbonisation but requires cross-sectoral coordination

    Forster, E., Healey, J., Newman, G. & Styles, D., 25 Hyd 2023, Yn: Nature Communications. 14, 1, 6766.

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