Smith Guy Harold Ed. <br/><br/>
Conservation of natural resources 

 - 2 
 - New York  John Wiley & Sons        1958 
 - 474p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geoparphy
<br/><br/><label>Dewey Class. No.: </label>U671.73, J8;2