TY  - BOOK
AU  - Horwitz,William
ED  - Association of Official Analytical Chemist.
TI  - Official methods of analysis of the Association of Official Analytical Chemist
SN  - 0935584145
U1  - C 543.08 
PY  - 1980///
CY  - Washington
PB  - The Association, 
KW  - QUIMICA ANALITICA
ER  -