Dasmann, Raymond Fredric. <br/><br/>
Environmental conservation / 
Raymond F. Dasmann. 
 - 4th ed. 
 - New York :  Wiley,  c1976. 
 - xi, 427 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471196029(pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources.<br/>Ecology.<br/>Human ecology.