TY  - GEN
AU  - Li,Ta M.
AU  - Plouf,Thomas M.
ED  - Society of Mining Engineers of AIME.
TI  - Small mines development in precious metals
SN  - 0873350693
PY  - 1987///
CY  - Littleton, Colo.
PB  - Society of Mining Enginers
KW  - Precious metals
KW  - Mining engineering
ER  -