Biosphere reserves and the world conservation strategy II

by 84064 Krugman, S.L. Eds., 124365 THORSELL, J.W., 73747 Gregg Jr., W.P., 18533 U.S. Dept. of the Interior, Washington D.C. National Park Service, 33458 4. World Wilderness Congress Worldwide Conservation Estes Park, Colo. (EUA) 11 - 18 Set 1987
Published 1989