Poland environmental strategy
1992
Environmental surveys
State of the environment in Czechoslovakia
1992
Vavrousek, Josef |
Mikolas, Jan |
Sremer, Pavel |
Opportunities for sustained development, succesful natural resources management in the Sahel
1988
Shaikh, Asif |
Arnould, Eric |
Wood usage and tree planting in Zimbabwe's communal lands : a baseline survey of knowledge, attitudes and practices
1984
Du Toit, R. F. |
Campell, B. M. |
Haney, R. A. |
Dore, D. |