National natural resource policy Republic of the Gambia, West Africa : final policy document
1990
Environmental education
Tourisme et environnement : du tourisme de nature à l'écotourisme
1993
Blangy, Sylvie |
A West African nature study
1953
Carpenter, A. J. |
Register of European environmental and nature conservation study centres
1990
Szalay-Marzsó, Enikö |
A natural environment for learning : proceeds of an international congress on education in botanic gardens held in Utrecht, the Netherlands, 14-16 May 1991
1991
Willison, Julia |
Wyse Jackson, Peter |
Managing protected areas in Africa
1992
Lusigi, Walter J. |
Parque Nacional de Los Haitises, República Dominicana : sendero bosque humedo. Guia de interpretación : programa de uso público y educación ambiental
1992
Cámara Artigas, Rafael |
Molina Vázquez, Jésus M. |
Conservation biology : a training manual for biological diversity and genetic resources
Kapoor, Promila |
White, James |