Zimmermann, Erich W.  1888- <br/><br/>
World resources and industries :  a functional appraisal of the availability of agricultural and industrial materials / 
Erich W. Zimmermann. 
 - revised ed. 
 - New York :  Harper & Row,  1951. 
 - xvi, 832 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commercial geography.<br/>Natural resources.<br/>Industries.<br/>Agriculture--Economic aspects.<br/>Economic geography.