1. 2021
2. Cyhoeddwyd

   Corneal sensitivity is required for orientation in free-flying migratory bats

   Lindecke, O., Holland, R., Petersons, G. & Voigt, C. C., 5 Mai 2021, Yn: Communications Biology. 4, 1, 522.

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

3. Cyhoeddwyd

   Sympatric cases of squirrelpox in red and grey squirrels

   Shuttleworth, C., Everest, D., Wood, C. & Holmes, J. P., 7 Mai 2021, Yn: The Veterinary record. 188, 9, t. 358

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

4. Cyhoeddwyd

   Polyphenolic Profiling of Green Waste Determined by UPLC-HDMS E

   Potter, C. M. & Jones, D. L., 9 Mai 2021, Yn: Processes. 9, 5, e824.

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

5. Cyhoeddwyd

   African and Asian leopards are highly differentiated at the genomic level

   Paijmans, J., Barlow, A., Becker, M. S., Cahill, J. A., Fickel, J., Forster, D. W. G., Gries, K., Hartmann, S., Havmoller, R. W., Henneberger, K., Kern, C., Kitchener, A. C., Lorenzen, E. D., Mayer, F., O'Brien, S. J., von Seth, J., Sinding, M-H. S., Spong, G., Uphyrkina, O., Wachter, B., Westbury, M. V., Dalén, L., Bhak, J., Manica, A. & Hofreiter, M., 10 Mai 2021, Yn: Current Biology.

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

6. Cyhoeddwyd

   Ancient and modern stickleback genomes reveal the demographic constraints on adaptation

   Kirch, M., Romundset, A., Gilbert, M. T. P., Jones, F. C. & Foote, A. D., 10 Mai 2021, Yn: Current Biology. 31, 9, t. 2027-2036

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

7. Cyhoeddwyd

   Design and Operation of Empirical Manganese-Removing Bioreactors and Integration into a Composite Modular System for Remediating and Recovering Metals from Acidic Mine Waters

   Santos, A. L. & Johnson, B., 10 Mai 2021, Yn: Applied Sciences. 11, 9, 4287.

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

8. Cyhoeddwyd

   Environmental DNA reveals links between abundance and composition of airborne grass pollen and respiratory health

   Rowney, F. M., Brennan, G. L., Skjoth, C. A., Griffith, G. W., McInnes, R. N., Clewlow, Y., Adams-Groom, B., Barber, A., De Vere, N., Economou, T., Hegarty, M., Hanlon, H. M., Jones, L., Kurganskiy, A., Petch, G. M., Potter, C., Munawar Rafiq, A., Warner, A., The PollerGEN Consortium, Wheeler, B. W., Osborne, N. J. & Creer, S., 10 Mai 2021, Yn: Current Biology. 31, 9, t. 1995-2003 9 t.

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

9. Cyhoeddwyd

   Environmental DNA monitoring of oncogenic viral shedding and genomic profiling of sea turtle fibropapillomatosis reveals unusual viral dynamics

   Farrell, J. A., Yetsko, K., Whitmore, L., Whilde, J., Eastman, C. B., Ramia, D. R., Thomas, R., Linser, P., Creer, S., Burkhalter, B., Schnitzler, C. & Duffy, D. J., 12 Mai 2021, Yn: Communications Biology. 4, 1, t. 565 1 t.

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

10. Cyhoeddwyd

    Gap-Fillers for Wooden Artefacts Exposed Outdoors—A Review

    Broda, M., Kryg, P. & Ormondroyd, G. A., 12 Mai 2021, Yn: Forests. 12, 5, e606.

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

11. Cyhoeddwyd

    Nature-based solutions for climate change in the UK - Peatlands

    Dunn, C., Burden, A., Chamberlain, B., Danek, S., Evans, C., Freeman, C., Harvey, R., Proctor, S. & Walker, J., 12 Mai 2021, Nature-based solutions for climate change in the UK. British Ecological Society

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

12. Cyhoeddwyd

    Attenuation and transport of human enteric viruses and bacteriophage MS2 in alluvial sand and gravel aquifer media-laboratory studies

    Pang, L., Farkas, K., Lin, S., Hewitt, J., Premaratne, A. & Close, M., 15 Mai 2021, Yn: Water research. 196, 117051.

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

13. Cyhoeddwyd

    Substitution of beef with pea protein reduces the environmental footprint of meat balls whilst supporting health and climate stabilisation goals

    Saget, S., Porto Costa, M., Sancho Santos, C., Wilton de Vasconcelos, M., Gibbons, J., Styles, D. & Williams, M., 15 Mai 2021, Yn: Journal of Cleaner Production. 297, 126447.

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

14. Cyhoeddwyd

    Turbulent mixing and the formation of an intermediate nepheloid layer above the Siberian continental shelf break

    Shultz, K., Buttner, S., Rogge, A., Janout, M. A., Holemann, J. & Rippeth, T., 16 Mai 2021, Yn: Geophysical Research Letters. e2021GL092988.

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

15. Cyhoeddwyd

    Rubber Agroforestry: Feasibility at Scale

    Wang Mei Hua, M., Warren-Thomas, E. & Cherico Wanger, T., 18 Mai 2021, Mighty Earth. 130 t.

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

16. Cyhoeddwyd

    Ten Years of Deformed Wing Virus (DWV) in Hawaiian Honey Bees (Apis mellifera), the Dominant DWV-A Variant Is Potentially Being Replaced by Variants with a DWV-B Coding Sequence

    Grindrod, I., Kevill, J. L., Villalobos, E. M., Schroeder, D. C. & Martin, S. J., 24 Mai 2021, Yn: Viruses. 13, 6, 969.

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

17. Cyhoeddwyd

    Advances in Venomous Snake Systematics, 2009–2019

    Wüster, W., 25 Mai 2021, Handbook of Venoms and Toxins of Reptiles, Second Edition. Mackessy, S. P. (gol.). Boca Raton: Taylor & Francis, t. 123-145 23 t.

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

18. Cyhoeddwyd

    Artificial shorelines lack natural structural complexity across scales

    Lawrence, P., D'Urban Jackson, T., Jenkins, S., Williams, G. J. & Davies, A., 26 Mai 2021, Yn: Proceedings of the Royal Society B: Biological Sciences. 288, 1951, t. 20210329 rspb.2021.0329.

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

19. Cyhoeddwyd

    Investigating awareness, fear and control associated with norovirus and other pathogens and pollutants using best–worst scaling

    Farkas, K., Green, E., Rigby, D., Cross, P., Tyrrel, S., Malham, S. & Jones, D. L., 27 Mai 2021, Yn: Scientific Reports. 11, 1, 11 t., 11194.

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

20. Cyhoeddwyd

    Overriding water table control on managed peatland greenhouse gas emissions

    Evans, C. D., Peacock, M., Baird, A. J., Artz, R. R. E., Burden, A., Callaghan, N., Chapman, P. J., Cooper, H. M., Coyle, M., Craig, E., Cumming, A., Dixon, S., Gauci, V., Grayson, R. P., Helfter, C., Heppell, C. M., Holden, J., Jones, D. L., Kaduk, J., Levy, P., Matthews, R., McNamara, N. P., Misselbrook, T., Oakley, S., Page, S. E., Rayment, M., Ridley, L., Stanley, K. M., Williamson, J. L., Worrall, F. & Morrison, R., 27 Mai 2021, Yn: Nature. 593, t. 548-552

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

21. Cyhoeddwyd

    Registros de especies priorizadas de mamíferos de Colombia, recopilados a partir de la información de fototrampeo

    Salamanca, I., 28 Mai 2021

    Allbwn ymchwil: Ffurf annhestunol › Data/Bas Data

22. Cyhoeddwyd

    When density is a superhero

    Dimitriou, A., 28 Mai 2021, Wood Based Panels International.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigol › Erthygl

23. Cyhoeddwyd

    The flows of nature to people, and of people to nature: applying movement concepts to ecosystem services

    Dolan, R., Bullock, J., Jones, J. P. G., Athanasiadis, I., Martinez-Lopez, J. & Willcock, S., 29 Mai 2021, Yn: Land. 10, 6, 15 t., 576.

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

24. Cyhoeddwyd

    Impact of marine heatwaves for sea turtle nest temperatures

    Hays, G. C., Chivers, W. J., Laloë, J-O., Sheppard, C. & Esteban, N., 30 Mai 2021, Yn: Biology letters. 17, 5, rsbl.2021.0038.

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

25. Cyhoeddwyd

    Development of Frequency-Fixed All-Pass Filter based Single-Phase Phase-Locked Loop

    Gautam, S., Xiao, W., Lu, D. D-C., Ahmed, H. & Guerrero, J. M., 31 Mai 2021, Yn: IEEE Journal of Emerging and Selected Topics in Power Electronics .

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

26. Cyhoeddwyd

    Geographical variation in the carbon, nitrogen, and phosphorus content of blue mussels, Mytilus edulis

    van der Schatte Olivier, A., Le Vay, L., Malham, S. K., Christie, M., Wilson, J., Allender, S., Schmidlin, S., Brewin, J. M. & Jones, L., Meh 2021, Yn: Marine pollution bulletin. 167, 112291.

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

27. Cyhoeddwyd

    Influence of Land Use Land Cover on River Water Quality in Rural North Wales, UK

    Crooks, E., Harris, I. & Patil, S., Meh 2021, Yn: Journal of the American Water Resources Association. 57, 3, t. 357-373

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

28. Cyhoeddwyd

    Physiological basis of interactive responses to temperature and salinity in coastal-marine invertebrate: implications for responses to warming

    Torres, G., Chamantier, G., Wilcockson, D., Harzsch, S. & Gimenez Noya, L., Meh 2021, Yn: Ecology and Evolution. 11, 11, t. 7042-7056 15 t.

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

29. Cyhoeddwyd

    Reproductive traits and population dynamics of benthic invertebrates indicate episodic recruitment patterns across an Arctic polar front

    Reed, A. J., Godbold, J., Solan, M. & Grange, L., Meh 2021, Yn: Ecology and Evolution. 11, 11, t. 6900-6912 13 t.

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

30. Cyhoeddwyd

    The annual cycle of energy input, modal excitation and physical plus biogenic turbulent dissipation in a temperate lake

    Simpson, J., Woolway, I., Scannell, B., Austin, M., Powell, B. & Maberly, S. C., Meh 2021, Yn: Water Resources Research. 57, 6, 2020WR029441.

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

31. Cyhoeddwyd

    40 Gb/s quantum random number generation based on optically sampled amplified spontaneous emission

    Guo, Y., Cai, Q., Li, P., Jia, Z., Xu, B., Zhang, Q., Zhang, Y., Zhang, R., Gao, Z., Shore, K. A. & Wang, Y., 1 Meh 2021, Yn: APL Photonics. 6, 6, t. 066105 1 t.

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

32. Cyhoeddwyd

    A standardised tidal-stream power curve, optimised for the global resource

    Lewis, M., O'Hara Murray, R., Fredriksson, S., Maskell, J., de Fockert, A., Neill, S. & Robins, P., 1 Meh 2021, Yn: Renewable Energy. 170, t. 1308-1323

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

33. Cyhoeddwyd

    Aligning efficiency benchmarking with sustainable outcomes in the United Kingdom water sector

    Walker, N. L., Styles, D., Gallagher, J. & Williams, A. P., 1 Meh 2021, Yn: Journal of Environmental Management. 287, 112317.

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

34. Cyhoeddwyd

    Animals, protists and bacteria share marine biogeographic patterns

    Holman, L. E., De Bruyn, M., Creer, S., Carvalho, G., Robidart, J. & Rius, M., 1 Meh 2021, Yn: Nature Ecology and Evolution. 5, 6, t. 738–746

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

35. Cyhoeddwyd

    Data on how tree planting and management practices influence tree seedling survival in Kenya and Ethiopia

    Magaju, C., Winowiecki, L. A., Bartolini, P., Jeitani, A., Ochenje, I., Frija, A., Ouerghemmi, H., Vågen, T-G., Makui, P., Bonaiuti, E., Hagazi, N., Tofu, A., Sitotaw, A., Crossland, M., Kiura, E., Hadgu, K., Muriuki, J., Carsan, S., Sola, P. & Sinclair, F., 1 Meh 2021, Yn: Data in Brief. 36, 107073.

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

36. Cyhoeddwyd

    Ecological Consequences of Climate Extremes for Lakes

    Jennings, E., de Eyto, E., Jones, I. D., Ibelings, B., Adrian, R. & Woolway, I., 1 Meh 2021, Encyclopedia of Inland Waters: Reference Module in Earth Systems and Environmental Sciences. Elsevier

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

37. Cyhoeddwyd

    Influence of landscape features on urban land surface temperature: scale and neighborhood effects

    Shi, Y., Liu, S., Yan, W., Zhao, S., Ning, Y., Peng, X., Chen, W., Chen, L., Hu, X., Fu, B., Kennedy, R., Lv, Y., Liao, J., Peng, C., Rosa, I., Roy, D., Shen, S., Smith, A., Wang, C., Wang, Z., Xiao, L., Yang, L., Yuan, W., Yi, M., Zhang, H., Zhao, M., Zhu, Y. & Xiao, J., 1 Meh 2021, Yn: Science of the Total Environment. 771, 145381.

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

38. Cyhoeddwyd

    Influences of irrigation and fertilization on soil N cycle and losses from wheat-maize cropping system in northern China

    Zhang, X., Xiao, G., Bol, R., Wang, L., Zhuge, Y., Wu, W., Li, H. & Meng, F., 1 Meh 2021, Yn: Environmental Pollution. 278, 116852.

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

39. Cyhoeddwyd

    Maize and soybean experience fierce competition from soil microorganisms for the uptake of organic and inorganic nitrogen and sulphur: A pot test using C-13, N-15, C-14, and S-35 labelling

    Ma, Q., Pan, W., Tang, S., Sun, X., Xie, Y., Chadwick, D. R., Hill, P. W., Si, L., Wu, L. & Jones, D. L., 1 Meh 2021, Yn: Soil Biology and Biochemistry. 157, 108260.

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

40. Cyhoeddwyd

    Microbial potential for denitrification in the hyperarid Atacama Desert soils

    Wu, D., Senbayram, M., Moradi, G., Moerchen, R., Knief, C., Klumpp, E., Jones, D. L., Well, R., Chen, R. & Bol, R., 1 Meh 2021, Yn: Soil Biology and Biochemistry. 157, 108248.

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

41. Cyhoeddwyd

    On thinning ice: Effects of atmospheric warming, changes in wind speed and rainfall on ice conditions in temperate lakes (Northern Poland)

    Bartosiewicz, M., Ptak, M., Woolway, R. I. & Sojka, M., 1 Meh 2021, Yn: Journal of Hydrology. 597, 125724.

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

42. Cyhoeddwyd

    Proximity between humans and a highly medically significant snake, Russell’s viper, in a tropical rural community

    Glaudas, X., 1 Meh 2021, Yn: Ecological Applications. 31, 4, e02330.

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

43. Cyhoeddwyd

    Root hairs and protein addition to soil promote leucine aminopeptidase activity of Hordeum vulgare L

    Greenfield, L., Razavi, B., Bilyera, N., Zhang, X. & Jones, D. L., 1 Meh 2021, Yn: Rhizosphere. 18, 100329.

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

44. Cyhoeddwyd

    Shining a light on parasite behaviour: daily patterns of Argulus fish lice

    Hunt, R., Cable, J. & Ellison, A., 1 Meh 2021, Yn: Parasitology. 148, 7, t. 850-856 7 t.

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

45. Cyhoeddwyd

    Synchronization of polarization chaos in mutually coupled free-running VCSELs

    Wang, Z., Li, P., Jia, Z., Wang, W., Xu, B., Shore, K. A. & Wang, Y., 1 Meh 2021, Yn: Opt. Express. 29, 12, t. 17940-17950 11 t.

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

46. Cyhoeddwyd

    Tidal Range Resource of Australia

    Neill, S., Hemer, M., Robins, P., Griffiths, A. & Furnish, A., 1 Meh 2021, Yn: Renewable Energy. 170, t. 683-692

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

47. Cyhoeddwyd

    Tracking the Fine Scale Movements of Fish using Autonomous Maritime Robotics: A Systematic State of the Art Review

    Nash, J. Z., Teahan, W., Bond, J., McCarthy, I., Pierce, I., Case, M. & Mowat, R., 1 Meh 2021, Yn: Ocean Engineering. 229, 108650.

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

48. 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

49. Cyhoeddwyd

    Methods to study organogenesis in decapod crustacean larvae. I. larval rearing, preparation, and fixation

    Torres, G., Melzer, R. R., Spitzner, F., Šargač, Z., Harzsch, S. & Gimenez Noya, L., 2 Meh 2021, Yn: Helgoland Marine Research. 75, 1, 3.

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

50. Cyhoeddwyd

    Widespread deoxygenation of temperate lakes

    Jane, S. F., Hansen, G. J. A., Kraemer, B. M., Leavitt, P. R., Mincer, J. L., North, R. L., Pilla, R. M., Stetler, J. T., Williamson, C. E., Woolway, R. I., Arvola, L., Chandra, S., DeGasperi, C. L., Diemer, L., Dunalska, J., Erina, O., Flaim, G., Grossart, H-P., Hambright, K. D., Hein, C., Hejzlar, J., Janus, L. L., Jenny, J-P., Knoll, L. B., Leoni, B., Mackay, E., Matsuzaki, S-I. S., McBride, C., Muller-Navarra, D. C., Paterson, A. M., Pierson, D., Rogora, M., Rusak, J. A., Sadro, S., Saulnier-Talbot, E., Schmid, M., Sommaruga, R., Thiery, W., Verburg, P., Weathers, K. C., Weyhenmeyer, G. A., Yokota, K. & Rose, K. C., 2 Meh 2021, Yn: Nature. 594, 7861, t. 66-70

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

51. Cyhoeddwyd

    Climate change drives widespread shifts in lake thermal habitat

    Kraemer, B. M., Pilla, R. M., Woolway, R. I., Anneville, O., Ban, S., Colom-Montero, W., Devlin, S. P., Dokulil, M. T., Gaiser, E. E., Hambright, K. D., Hessen, D. O., Higgins, S. N., Johnk, K. D., Keller, W., Knoll, L. B., Leavitt, P. R., Lepori, F., Luger, M. S., Maberly, S. C., Mueller-Navarra, D. C., Paterson, A. M., Pierson, D. C., Richardson, D. C., Rogora, M., Rusak, J. A., Sadro, S., Salmaso, N., Schmid, M., Silow, E. A., Sommaruga, R., Stelzer, J. A. A., Straile, D., Thiery, W., Timofeyev, M. A., Verburg, P., Weyhenmeyer, G. A. & Adrian, R., 3 Meh 2021, Yn: Nature Climate Change. 11, 6, t. 521-529

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