TY  - BOOK
AU  - Horwitz, William.
ED  - Association of Official Analytical Chemists
TI  - Official methods of analysis
U1  - 630.24 
PY  - 1970///
CY  - Washington
PB  - Association of Official Analytical Chemists
KW  - Química agrícola
KW  - Química analítica
ER  -