TY  - BOOK
AU  - Menzie, W. D.
AU  - Singer, D. A.
CN  - I 19.76:
CY  - Reston, VA :
DA  - 1993.
ID  - 240754
KW  - Porphyry
KW  - Copper ores
KW  - Ore deposits
KW  - Mineral resources
N1  - Cover title.
N1  - Shipping list no.: 94-0603-M.
PB  - U.S. Geological Survey,
PP  - Reston, VA :
PY  - 1993.
T1  - Grade and tonnage model of Porphyry Cu deposits in British Columbia, Canada, and Alaska, U.S.A.
TI  - Grade and tonnage model of Porphyry Cu deposits in British Columbia, Canada, and Alaska, U.S.A.
VL  - 93-275
ER  -