1. 1991
2. Postglacial vegetational dynamics in Lowland North Wales.

   Watkins, R. (Awdur), Rhag 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. Trace elements and polychlorinated biphenyl (PCB) congeners in Liverpool Bay sediments.

   Camacho-Ibar, V. F. (Awdur), Rhag 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

4. Aspects of phrases and clauses in Syrian within the framework of head-driven phrase structure grammar.

   Chahristan, K. (Awdur), Tach 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. Variation of growth and reproduction in a marine bryozoan.

   Hunter, E. (Awdur), Hyd 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

6. 'Shake' defects and wood structure variations in British oaks (Quercus SPP.).

   Henman, G. S. (Awdur), Medi 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. Aspects of the biology of Sacculina carcini (Crustacea: cirripeda: rhizocephala), with particular emphasis on the larval energy budget.

   Collis, S. A. (Awdur), Medi 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

8. Late Quaternary benthonic Foraminiferal stratigraphy the western U.K. Continental Shelf.

   Austin, W. E. N. (Awdur), Medi 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

9. Personal control, performance and health

   Smith, L. (Awdur), Hardy, L. (Goruchwylydd), Gorff 1991

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. The characterisation of thin insulating films on metal electrodes immersed in aqueous electrolytes using the AC Admittance Technique.

    Macdonald, A. G. (Awdur), Maw 1991

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

11. Behavioural responses of the shore crab Carcinus maenus to salinity variation.

    Mcgaw, I. J. (Awdur), Chwef 1991

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth