World directory of environmental organizations: a handbook of national and international organizations and programs-governmental and non-governmental-concerned with protecting the Earth's resources
Claremont, calif., USA
California Institute of Public Affairs in cooperation with the Sierra Club and IUCN - The World Conservation Union
c1992
231p
Who's doing what series; no.2
Includes index
edited by Thaddeus C. Trzyna and Roberta Childers
4th ed
Ref.
Directories - Periodicals ، Conservation of natural resources