IUCN - The World Conservation Union : membership directory
1992
Directories
Island directory
1991
Dahl, Arthur L. |
Protected areas in eastern and central Europe and the USSR : an interim review
1990
Atkinson, Robert |
Karpowicz, Zbigniew |
Spalding, Mark |
Addendum - corrigendum to the second edition of United Nations list of national parks and equivalent reserves, including data received to 30 June 1972
1972
Harroy, Jean-Paul |