American drug index / 
edited by Norman F. Billups and Shirley M. Billups 
 - 35th ed. 
 - St. Louis :  Facts and Comparisons,  1991 
 - 750 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0932686281 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drugs--Catalogs<br/>Drugs--Indexes