TY  - BOOK
AU  - Aaron,C.H.
TI  - Assaying in three parts
AV  - TN550 A37 1889
PY  - 1880///
CY  - San francisco, california
PB  - Dewey
KW  - Ensayos
N1  - Contenido: pt. 1. gold and silver ores.--pt. 2. gold and silver bullion.--pt. 3. lead, copper, tin, mercury, zinc, nickel and cobalt, chromium, bismuth, asrsenic, antimony, sulphur, salt
ER  -