Hoover, Herbert, 1874-1964
Principles of Mining : Valuation, Organization and Administration [electronic resource] / Herbert Hoover - Project Gutenberg, 2008 - Project Gutenberg 26697 .
Public domain in the USA.
Electronic text
Mining engineering Mines and mineral resources Mineral industries -- Finance
TN
Principles of Mining : Valuation, Organization and Administration [electronic resource] / Herbert Hoover - Project Gutenberg, 2008 - Project Gutenberg 26697 .
Public domain in the USA.
Electronic text
Mining engineering Mines and mineral resources Mineral industries -- Finance
TN