Butler, B.S..
Silver, Cooper, Lead, and Zinc in the central States in 1913 : Mines Report. - Washington, D.C. Government Printing Office 1914 - pp. 81-171
Impreso En biblioteca 2 ejemplares.
Ingles
MINERIA
Silver, Cooper, Lead, and Zinc in the central States in 1913 : Mines Report. - Washington, D.C. Government Printing Office 1914 - pp. 81-171
Impreso En biblioteca 2 ejemplares.
Ingles
MINERIA