Changes in official methods of analysis of the Association of Official Analytical Chemists   / Association of Official Analytical Chemists  
suplements : first suppl. 1990, second suppl. 1991, third suppl 1992 to the fifteenth edit. 1990 
 - Arlington, Virginia:  A.O.A.C.  , 1993 
 - 154 p.:  29 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Alimentos análisis Química analítica Metodología Normas