Nature conservation : cost effective biological surveys and data analysis 1991 Margules, C. R. (Christopher Robert) | Austin, M. P. |
The vegetation of the Republic of Yemen, western part 1991 Scholte, Paul | Al Khuleidi, Abdu Wali | Kessler, Jan Joost |
Prise en compte de la diversité biologique dans l'aménagement et la gestion forestière : instruction 1993
Action for biodiversity in the UK ; a seminar at the Royal Geographical Society, London, 13-14 May 1993 Wright, F. J. | Galbraith, C. A. | Bendall, R. |