Freese, Curtis H. Wild species as commodities : managing markets and ecosystems for sustainability / - Washington, DC : Island Press, c1988. - xv, 319 p. : ill. ; 23 cm. ISBN: 1559635711 (alk. paper) 155963572X (pbk. : alk. paper) Subjects--Topical Terms: Wildlife utilization.Non-timber forest resources.Biology, Economic.Biodiversity conservation. Dewey Class. No.: 333 ISL 1988 A079 Or.