1. 1980
2. Food selection by the rabbit.

   Soane, G. A. (Awdur), Ion 1980

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. Studies on plant-animal interactions : Terrestrial molluscs and their food plants.

   Minjarez, R.D. (Awdur), Ion 1980

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

4. 1979
5. Biochemical aspects of fascioliasis in domestic and experimental animals.

   Gameel, A. A. R. (Awdur), Meh 1979

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

6. An economic appraisal of forestry and the forest industries of Greece 1950-1990.

   Sakkas, G. A. (Awdur), Ion 1979

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. Studies in Antarctic palaeobotany.

   Lucas, R. C. (Awdur), Ion 1979

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

8. The history of forests and forestry in Wales up to the formation of the Forestry Commission

   Linnard, W. (Awdur), Ion 1979

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

9. 1974
10. A study of excretion in the slug Agriolimax reticulatus

    Garner, J. (Awdur), Medi 1974

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

11. 1973
12. The effects of trampling and vehicles on natural vegetation.

    Liddle, M. (Awdur), P. Greig-Smith, P. (Goruchwylydd), Mai 1973

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

13. 1970
14. Studies on organ cultures of slug reproductive tracts

    Bailey, T. G. (Awdur), Medi 1970

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

15. 1968
16. A comparative study of morphology, behaviour and ecology of Chaetogaster Limnaei ( von Baer) from several host species

    Buse, A. (Awdur), Medi 1968

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

17. 1966
18. Studies in the flora of the Rhynie chert

    Saadawy, W.E.-S. (Awdur), Meh 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

19. Studies on plant microfossils from the Carboniferous of North Wales

    Hibbert, F. A. (Awdur), Ebr 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

20. Studies on fossil plants of Karoo age from Central & Southern Africa

    Williams, P. (Awdur), Ion 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

21. The genetics and evolution of differences between closely adjacent plant populations, with special reference to heavy metal tolerance

    Antonovics, J. (Awdur), Ion 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

22. Studies on the nutrition and feeding of the larvae of the large cabbage white butterfly, Pieris brassicae L.

    Akhtar, M. (Awdur), 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

23. 1965
24. Comparative studies in the pathology of radiomimetic conditions

    Mason, J. (Awdur), Medi 1965

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

25. 1963
26. An ecological study of Chaetogaster limnaei( von Baer)

    Gruffydd, L. D. (Awdur), Ebr 1963

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

27. 1959
28. Calcareous algae of the silurian of the Welsh border

    Green, H. (Awdur), Ebr 1959

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

29. 1958
30. A Study in the Experimental Taxonomy of some British Sphagha (section Cuspidata),with observations of their ecology.

    Agnew, S. (Awdur), 5 Mai 1958

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth