1. 1981
2. Biosystematic and cytological studies of mosses and liverworts.

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. Studies on the ecology of Littorina Obtusata

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

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

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

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

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

6. 1980
7. 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

8. Food selection by the rabbit.

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

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

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. 1979
11. Biochemical aspects of fascioliasis in domestic and experimental animals.

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

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

12. 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

13. Studies in Antarctic palaeobotany.

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

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth