Agricultural chemistry :  a reference text / 
Edited by Donald E. H. Frear. 
 - New York :  Van Nostrand,  c 1950. 
 - Vols. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>V. 1- Principles of agricultural chemistry ; 
<br/><br/>80  80 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture and related technologies. 
<br/><br/><label>Dewey Class. No.: </label>630.24 / F87a