System Plan for Protected Areas, Oman
1987
Nature conservation
Towards a zoning policy for the conservation and sustainable utilisation of the mountain environments of South Africa
Blignaut, Peter Erle |
WALIA 1986
1986
An environmental agenda for the future
1985
Cahn, Robert |
Biological conservation
1992
Spellerberg, Ian F. |
Hardes, Steve |
Conservation in progress
1993
Goldsmith, F. B. |
Warren, Andrew |
Protégeons la nature : elle nous le rendra
1946
Harroy, Jean-Paul |