Encyclopedia of chemical technology /  edited by Raymond E. Kirk and Donald F. Othmer. 

 - 3rd ed. 
 - New York :  John Wiley & Sons,  c 1984. 
 - Vols. :  ill. ;  26 cm. 
<br/><br/>V. 24-Vitamins to Zone refining ;   
<br/><br/>338  338 
<br/><br/><label>ISBN: </label>0-471-02077-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry--Technical--Encyclopedias.
<br/><br/><label>Dewey Class. No.: </label>660.3 / K635