Managing national park system resources : a handbook on legal duties, opportunities, and tools
1990
Mantell, Michael A. |
Protected area management
A report on joint Australia New Zealand international training course in administration of national parks and reserves 21 february to 12 may 1976
1977
Masud, Rana Mohammad |
Transfrontier reserves for peace and nature : a contribution to human security
1993
Westing, Arthur H. |