The pesticide problem : an economic approach to public policy
1967
Headley, J. C. |
Lewis, J. N. |
Economic aspects
The regional economic and social impact of a Punakaiki national park
1983
Stephens, R. J. |
Wells, C. |
Social and economic aspects of natural resources
1962
White, Gilbert F. |
An economic study of the proposed canyonlands national park and related recreation resources
1962
Edminster, Robert R. |
Harline, Osmond L. |
Forest ecosystem management : an ecological, economic, and social assessment. Report of the forest ecosystem management assessment team
1993
Thomas, Jack Ward |