TY  - BOOK
AU  - Brown, Walter Lee,
TI  - Manual of assaying: Gold, silver, lead, copper 
AV  - TN550 B76 1896
PY  - 1896///
CY  - Chicago, illinois
PB  - E.h. sargent
KW  - Ensayes
KW  - Manuales
ER  -