TY  - BOOK
AU  - Helrich, Kenneth,
ED  - Association of Official Analytical Chemists
TI  - Official methods of analysis of the association of official analytical chemists
SN  - 0935584420
AV  - S587 O44 1990
PY  - 1990///
CY  - Arlington, virginia
PB  - Association of official analytical chemists
KW  - Química agrícola
KW  - Tecnica
KW  - Química analítica
N1  - Contenido: v. 1. agricultural chemicals, contaminant's, drugs. -- v. 2. food composition, additives, natural contaminants
ER  -