Official methods of analysis of the association of official analytical chemists / 
edited by Kenneth Helrich 
 - 15 
 - volúmenes 
<br/><br/>Contenido: v. 1. agricultural chemicals, contaminants, drugs. -- v. 2. food composition, aditives, natural contaminats 
<br/><br/><label>ISBN: </label>0-935584-42-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Química analítica
<br/><br/><label>LC Class. No.: </label>QD75.2  / O44 1990