Incentives in water quality management : France and the Ruhr area /

Published 1981

Postwar trends in U.S. forest products trade : a global, national, and regional view /

by Sedjo, Roger A, Sedjo, Roger A, Sedjo, Roger A
Published 1981

Issues in U.S. international forest products trade : proceedings of a workshop held in Washington, D.C. on March 6 and 7, 1980 /

Published 1981

Energy development in the Southwest : problems of water, fish and wildlife in the upper Colorado River basin /

Published 1980