Owen, Oliver S.,  <br/><br/>
Natural resource conservation :  an ecological approach / 
Oliver S. Owen and Daniel D. Chiras ; editor Bob Rogers 
 - Fifth edition 
 - New York :  Macmillan Publishing co. 
 - xii, 538 pages :  illustrations ;  29 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780023901119 (hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources<br/>Ecology<br/>Environmental protection