Frost, David; McLean, Barbara M L and Evans, D Eifion (2002) Eight years of organic farming at Pwllpeiran – livestock production and the financial performance of organic upland. UK Organic Research 2002 Conference, Aberystwyth, 26-28 March 2002. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 259-262.