Sheldon, Richard P.  <br/><br/>
Dynamics of development of fertilizer mineral resources 

 - Hawaii  U.S. Geological Survey Resource Systems Institute 
 - 584p.  30cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOIL SCIENCES<br/>SPECIFIC TECHNIQUES ; APPARATUS, EQUIPMENT, MATERIALS
<br/><br/><label>Dewey Class. No.: </label>631.4  / SHE