McKnight, Edwin Thor 1902-1992
Geology and ore deposits of the Rico district, Colorado / by Edwin T. Mcknight. -- Washington : United States Government Printing Office, 1974 - 100 p. + map. -- (Geological Survey Professional Paper ; 723).
Colorado
Depósitos de minerales
553(788)
Geology and ore deposits of the Rico district, Colorado / by Edwin T. Mcknight. -- Washington : United States Government Printing Office, 1974 - 100 p. + map. -- (Geological Survey Professional Paper ; 723).
Colorado
Depósitos de minerales
553(788)