Owen, Oliver S.,  1920-. <br/><br/>
Natural resource conservation :  an ecological approach / 
Oliver S. Owen 
 - 3rd ed. 
 - New York :  Macmillan Publishing Co.,  1980 
 - xi, 883 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0023900202 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources<br/>Ecology<br/>Environmental protection<br/>Conservation of natural resources--United States<br/>Ecology--United States<br/>Environmental protection--United States