Hoover, Herbert, 1874-1964.
Principles of mining; valuation, organization and administration; copper, gold, lead, silver, tin and zinc, Herbert C. Hoover ... - New York : Hill Publishing Company, 1909. - iii-vii, 199 p. : ill. ; 24 cm.
09013936
Mines and mineral resources.
Mining engineering.
Mineral industries--Finance.
TN145 / .H7
549.12 / HOP
Principles of mining; valuation, organization and administration; copper, gold, lead, silver, tin and zinc, Herbert C. Hoover ... - New York : Hill Publishing Company, 1909. - iii-vii, 199 p. : ill. ; 24 cm.
09013936
Mines and mineral resources.
Mining engineering.
Mineral industries--Finance.
TN145 / .H7
549.12 / HOP