La fiscalité de l'espace naturel en France : essai de diagnostic et propositions de réformes d'après l'exemple des zones humides 1991 Sainteny, Guillaume |
Status of desertification and implementation of the United Nations Plan of Action to Combat Desertification : report 1991
In the human interest : a strategy to stabilize world population 1974 Brown, Lester R. (Lester Russell) |
Environment strategy Europe 1991 : including WICEM II official report 1991 Burke, Tom | Robins, Nick | Trisoglio, Alex |
Report of the second United Nations Conference on the Least Developed Countries, Paris, 3-14 September 1990 1991