TY  - BOOK
AU  - Colby,Donald S.
AU  - Brooks,David B.
TI  - Mineral resource valuation for public policy
T2  - Information circular
AV  - TN295 U4 no. 8422
PY  - 1969///
CY  - Washington
PB  - U.S. Bureau of Mines, Department of the Interior
KW  - Mines and mineral resources
KW  - United States
ER  -