Owen Oliver S <br/><br/>
Natural resource conservation ; an ecological approach 

 - New York  Macmillan Publishing       1971 
 - xiv,700p  cm. 
<br/><br/><label>Standard No.: </label>90,601 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U671:73:N7, L1;L5