Crossroads : environmental priorities for the future / edited by Peter Borrelli. Borrelli, Peter. Island Press. Nature conservation. QH75 .C74 1988 363.7 19 CRO Includes index. Washington, DC : Island Press, c1988. c1988. 1988 Text xiv, 339 p. ; http://www.loc.gov/catdir/enhancements/fy0666/88022338-d.html http://www.loc.gov/catdir/enhancements/fy1409/88022338-t.html eng