Allen, Shirley Walter. <br/><br/>
Conserving natural resources; principles and practice in a democracy 

 - New York :  McGraw-Hill,  1955 
 - 347 p.  : ilus 
<br/><br/><label>LCCN: </label>19109 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Recursos naturales--Conservación.
<br/><br/><label>Dewey Class. No.: </label>339.49  / A55