Gerry, C. N.
Gold, Silver, Copper, Lead, and Zinc in Montana in 1921 : Mines report. - Washington, D.C. Government Printing Office 1922 - pp. 283-309
Impreso
Ingles
MINERIA
Gold, Silver, Copper, Lead, and Zinc in Montana in 1921 : Mines report. - Washington, D.C. Government Printing Office 1922 - pp. 283-309
Impreso
Ingles
MINERIA