Barry Thomas

lnstitute of Rural Sciences, University of Wales Aberystwyth, Llanbadarn Fawr, Aberystwyth, Ceredigion SY23 3AL, UK
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 24, Sofia 1113, Bulgaria

Volume 34 1-2 June 2004

Department of Biodiversity and Systematic Biology, National Museums and Galleries of Wales, Cathays Park, Cardiff CFJ 3NP, UK
Department of Geography, University of Wales Lampeter, Lampeter, Ceredigion SA48 7ED, UK

Volume 28 3-4 December 1998