TY  - BOOK
AU  - Welcher, Frank Johnson
TI  - Chemical solutions: reagents useful to the chemist, biologist and bacteriologist 
AV  - QD 77 W4
PY  - 1942///
CY  - Princeton, N.J.
PB  - Van Nostrand
KW  - Química -
KW  - Pruebas y reactivos
ER  -