Birds in Jeopardy: Imperiled and Extinct Birds of the United States and Canada
by Paul R. Ehrlich, David S. Dobkin, Darryl Wheye
ISBN 13: 9780804719810
Format: Paperback (260 pages) Publisher: Stanford University Press Published: 31 Mar 1992
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Human Dependence on Nature: How to Help Solve the Environmental Crisis
by Haydn Washington, Paul R. Ehrlich
ISBN 13: 9780415632577
Format: Hardcover (184 pages) Publisher: Routledge Published: 18 Sep 2012
ISBN 13: 9780415632584
Format: Paperback (184 pages) Publisher: Routledge Published: 18 Sep 2012