1. 1981
2. Studies on the male reproductive cycle in the lizard Chalcides Ocellatus.

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

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

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

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

4. Elementary education in Caernarvonshire 1839-1902

   Williams, H. G. (Awdur), Ion 1981

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. The development of guidance and counselling in North Wales secondary schools from 1965 to the present day

   Rees, W. D. C. (Awdur), 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. The distribution and biodegradation of urea in costal waters

   Turley, C. M. (Awdur), Awst 1980

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

9. Functional analyses of reading and short-term memory in dyslexic children.

   Ellis, N. C. (Awdur), Ebr 1980

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. Food selection by the rabbit.

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

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

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

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

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

12. Human operant behavior: determinants of human fixed-interval performance.

    Bagshaw, M. (Awdur), 1980

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth