Zimmermann, Erich Walter. <br/><br/>
World resources and industries 

 - New York :  Harper and Brothers,  1951 
 - 832 p.  : ilus. 
<br/><br/><label>LCCN: </label>56522 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Recursos naturales.
<br/><br/><label>Dewey Class. No.: </label>330.9  / Z55 1951