The United states pharmacopeia. 

 - Rockville  United States Pharmacopeial Convention  1990 
 - liv, 2067p., 29cm 
 - (USP-xxii). .
<br/><br/><label>ISBN: </label>0-913595-38-1. 
<br/><br/><label>Dewey Class. No.: </label>615.1173  / U04U