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1par Union mondiale pour la nature
Elsevier [1956]Livre -
2
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3
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4par Holdgate Martin W.
Earthscan Publications 1996Livre -
5Livre
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6IUCN cop. 1994Livre
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7IUCN 1994Livre
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8
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9UICN DL 2011Livre
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10
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11IUCN--the World Conservation Union in collaboration with the George Wright Society, Science and Management of Protected Areas Association, Commission of the European Union cop.1994Livre
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12par World parks congress
Island Press cop.1995Livre -
13par Swanson Timothy M
Earthscan c1997Livre -
14par Fisher Ronald J.
UICN - Union mondiale pour la nature 1995Livre -
15par Glowka Lyle
IUCN-The World Conservation Union 1998Livre -
16
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17par Klemm Cyrille de
IUCN, the World conservation union 1993Livre -
18UICN, Union mondiale pour la nature [1997]Livre
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19Dept. of Regional Development and Environment, Executive Secretariat for Economic and Social Affairs, General Secretariat, Organization of American States 1995Livre
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20Chapman & Hall 1992Livre