Dasmann, Raymond Fredric. <br/><br/>
Environmental conservation 
Raymond F. Dasmann. 
 - 3rd ed. 
 - New York  Wiley  c1972. 
 - xi, 473 p.  ill.  27 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0471196002 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources.<br/>Ecology.<br/>Human ecology.