UNESCO

Mangrove ecosystem studies in Latin America and Africa

Reviews in ecology : desert conservation and development. A festschrift for Prof. M. Kassas on the occasion of his 75th birthday

Proceedings of the Norway/UN conference on alien species, Trondheim, 1-5 July 1996

L'alimentation en forêt tropicale : interactions bioculturelles et perspectives de développement

Cultural landscapes of universal values : components of a global strategy

L'homme et les espaces protégés

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