The West African Sahel : human agency and environmental change
1988
Gritzner, Jeffrey A. |
World Resources Institute (WRI)
Watersheds of the world : ecological value and vulnerability
1998
Revenga, Carmen |
Murray, Siobhan |
Abramovitz, Janet N. |
Hammond, Allen |
Pilot analysis of global ecosystems : grassland ecosystems
2000
White, Robin P. |
Murray, Siobhan |
Rohweder, Mark |
Pilot analysis of global ecosystems : forest ecosystems
2000
Matthews, Emily |
Payne, Richard |
Rohweder, Mark |
Murray, Siobhan |
Pilot analysis of global ecosystems : coastal ecosystems
2000
Burke, Lauretta Marie |
Kura, Yumiko |
Kassem, Ken |
Revenga, Carmen |
Spalding, Mark |
McAllister, Don |
Pilot analysis of global ecosystems : agroecosystems
2000
Wood, Stanley |
Sebastian, Kate |
Scherr, Sara J. |
Pilot analysis of global ecosystems : freshwater systems
2000
Revenga, Carmen |
Brunner, Jake |
Henninger, Norbert |
Kassem, Ken |
Payne, Richard |
Principes en pratique : observations du personnel des projets de conservation en Afrique
2000
Ntiamoa-Baidu, Yaa |
Zeba, Souleymane |
Mboje Gamassa, Deo-Gratias |
Bonnéhin, Léonie |
Increased investment and trade by transnational logging companies in Africa, the Caribbean and the Pacific : implications for the sustainable management and conservation of tropical forests
2000
Sizer, Nigel |
Plouvier, Dominiek |
Water and arid lands of the Western United States
1988
El-Ashry, Mohamed T. |
Gibbons, Diana C. |