1. 1990
2. Water relations of salt stressed wheat

   Arif, H. (Awdur), Ion 1990

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. 1989
4. Vegetation succession following the clearance of Rhododendron in the Vale of Ffestiniog.

   Hockley, T. G. (Awdur), Hyd 1989

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. 1988
6. Studies of the biological activity of a novel herbicide (Triasulfuron) including studies of mobility and persistence in soils.

   Oppong, F. K. (Awdur), Hyd 1988

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. Cost benefit analysis and sustained yield forestry in India.

   Kumar, P. J. D. (Awdur), Price, C. (Goruchwylydd), Ion 1988

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

8. 1987
9. Forest recreation use patterns user behaviour and recreational value in Malaysia.

   Sabri, W. M. W. (Awdur), Tach 1987

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. Genetic and environmental factors in the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera :Noctuidae).

    Woodrow, K. P. (Awdur), Medi 1987

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

11. Studies of leaf growth in barley

    Maan, A. A. S. (Awdur), Ion 1987

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

12. 1986
13. Geochemical and mineralogical studies of the weathering of Silurian argillaceous rocks

    Chapman, P. (Awdur), Medi 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

14. Sudies on the epidemiology of a Nigerian strain of Schistosoma haematobium with particular reference to the molluscan hosts

    Fryer, S. E. (Awdur), Maw 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

15. Physiological aspects of tillering in barley (Hordeum distichum).

    Woodward, E. J. (Awdur), Ion 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

16. Studies in cyclopropene chemistry.

    Dulayymi, A. R.A. (Awdur), Ion 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

17. 1985
18. An economic approach to assessing the value of recreation with special reference to forest areas.

    Christensen, J. B. (Awdur), Price, C. (Goruchwylydd), Rhag 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

19. The characterisation and control of ochre deposits in land drainage systems.

    Ap Dewi, I. (Awdur), Chwef 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

20. Reciprocal transplantations to study local specialisation and the measurement of components of fitness.

    Mackenzie, S. (Awdur), Ion 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

21. Carbon Allocation in Barley Plants

    Farrar, S. (Awdur), Farrar, J. F. (Goruchwylydd), 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

22. 1984
23. The biology of reproduction in two British pulmonate slugs.

    Nicholas, J. (Awdur), Hyd 1984

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

24. 1983
25. An experimental study on the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera : Noctuidae).

    Parker, W. E. (Awdur), Medi 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

26. Demography of animal modular colonies.

    Cancino, J. M. (Awdur), Meh 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

27. Ecophysiology of ecotypes : An investigation in the ecophysiology of sand dune ecotypes

    Baleela, A. R. H. (Awdur), Ion 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

28. 1982
29. Distribution, concentration and bonding factors affecting the performance of water repellents applied to wood

    Razzaque, M. A. (Awdur), Medi 1982

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

30. 1981
31. Biosystematic and cytological studies of mosses and liverworts.

    Abderrahman, S. M. M. (Awdur), Rhag 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

32. Studies on the ecology of Littorina Obtusata

    Hollingworth, C. E. (Awdur), Medi 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

33. Studies on the male reproductive cycle in the lizard Chalcides Ocellatus.

    Mahmoud, F. M. S. (Awdur), Mai 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

34. Micronutrient studies on cotton growth on Syrian calcareous soils.

    Mohammad, S. Y. (Awdur), Maw 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

35. 1980
36. Invasion of host tissue by infective larvae of Ascaris suum (Goeze, 1782)

    Arene, F. O. I. (Awdur), Tach 1980

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth