Allen, Shirley Walter, <br/><br/>
Conserving natural resources;  principles and practice in a democracy 
Shirley Walter Allen and Justin Wilkinson Leonard. 
 - 3d ed. 
 - New York,  McGraw-Hill  c1966. 
 - vii, 432 p.  illus., maps.  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/>
<br/><br/><br/>English 
<br/><br/><label>LCCN: </label>65028230  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources--United States.
<br/><br/><label>LC Class. No.: </label>HC103.7  / .A7 1966 
<br/><br/><label>Dewey Class. No.: </label>333.72/ALC