TY  - BOOK
AU  - Lepper, Henry A.
ED  - Association of Official Analytical Chemists
TI  - Official methos of analysis of the Association of ..
U1  - 630.24 
PY  - 1950///
CY  - Washington
PB  - Association of Official Agricultura Chemists
KW  - Química agrícola
KW  - Química analítica
ER  -