Union internationale pour la protection de la nature créée à Fontainebleau, le 5 octobre 1948
1948
Bernard, Ch. J. |
Hayez, BE
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 |
Addendum - corrigendum to the second edition of the United Nations list of national parks and equivalent reserves including data received to 30 June 1972
1972
Harroy, Jean-Paul |
Proceedings and papers : International Technical Conference on the Protection of Nature, Lake Success, NY, 22-29 August 1949
1950
Harroy, Jean-Paul |
International Union for the Protection of Nature established at Fontainebleau, 5 October 1948
1948
Bernard, Ch. J. |
