1. Doethur mewn Athroniaeth
2. Whole tree harvesting and wood ash recycling to forests : case studies in upland Sitka spruce in Wales

   Awdur: Walmsley, J. D., Medi 2008

   Goruchwylydd: Healey, J. (Goruchwylydd) & Jones, D. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. Why does the environment matter? : an analysis of environmental and development ethics within the debate on sustainability and social justice

   Awdur: O'Reilly, S. M. G., 1999

   Goruchwylydd: Cooper, R. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

4. Wild deer in Wales, their impact and management in agriculture, private forestry and woodlands managed for conservation in Wales

   Awdur: Symmons, J., Ion 2010

   Goruchwylydd: Edwards-Jones, G. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. Wool fibres for the sorption of volatile organic compounds (VOCs) from indoor air

   Awdur: Mansour, E., Ion 2018

   Goruchwylydd: Ormondroyd, G. (Goruchwylydd) & Curling, S. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

6. he Arabidopsis extensin gene at Ext1: studies on protein function and gene regulation

   Awdur: Brown, K., 2004

   Goruchwylydd: Shirsat, A. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. ‘Agricultural policy change and the sustainability of farming in the uplands’

   Awdur: Arnott, D., 2 Meh 2021

   Goruchwylydd: Jones, D. (Goruchwylydd) & Chadwick, D. (Goruchwylydd)

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth