Setting environmental standards : guidelines for decision-making
1987
UNEP
The palms of the new world : a conservation census
1988
Dransfield, J. |
Johnson, Dennis Victor |
Synge, Hugh |
The botanic gardens conservation strategy
1989
Heywood, Vernon |
Asian rhinos : an action plan for their conservation
1989
Mohd. Khan bin Momin Khan |
African elephants and rhinos : status survey and conservation action plan
1990
Cumming, David H. M. |
Du Toit, R. F. |
Stuart, S. N. |