Owen, Oliver S <br/><br/>
Natural resource conservation:   An ecological approach  
/ The Macmillan Company 
 - New York:   The Macmillan Company,   1971 
 - xii, 591p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Universal Decimal Class. No.: </label>339.5   / L1