TY  - BOOK
AU  - Helrich, Kenneth,
TI  - Official methods of analysis of the association of official analytical chemists
SN  - 0-935584-42-0
AV  - QD75.2 O44 1990
PY  - 1990///-9999
CY  - Arlington, virginia
PB  - Association of official analytical chemists
KW  - Química analítica
N1  - Contenido: v. 1. agricultural chemicals, contaminants, drugs. -- v. 2. food composition, aditives, natural contaminats
ER  -