Superphosphate;  its history, chemistry, and manufacture 
[prepared by] Soil and Water Conservation Research Division, Agricultural Research Service, U. S. Department of Agriculture and Office of Agricultural and Chemical Development, Tennessee Valley Authority. 
 - Washington,  Agricultural Research Service, U.S. Depart of Agriculture; for sale by the Superintendent of Documents, U.S. Govt. Print. Off.,  1964. 
 - iv, 349 p.  illus., ports.  27 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>agr65000080  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phosphates.<br/>Fertilizer industry--United States.
<br/><br/><label>LC Class. No.: </label>TP963  / .U5 
<br/><br/><label>Gov. Doc. Class. No.: </label>A 77.2:Su 7