Holechek, Jerry. Natural resources : ecology, economics, and policy / Jerry L. Holechek, richard a. cole, james t. fisher ...et al. - Upper Saddle River, NJ : Prentice Hall, c2000. - 730 p. : ill., maps ; 29 cm. Includes bibliographical references and index. ISBN: 0138960771 Subjects--Topical Terms: Natural resources.Natural resources--Government policy.Ecology. Dewey Class. No.: 333.7 / n a