Soil and fertilizer phosphorus in crop nutrition / 
edited by W.H. Pierre and A.G. Norman. 
 - New York :  Academic Press,  1953 
 - xvi, 492 p. ;  maps. 
 - Agronomy ;  v. 4 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phosphatic fertilizers.<br/>Soils--Phosphorus content.