Brooks, Alfred H.
Gold, silver, copper, and lead in Alaska in 1920 : Mines report. - Washington, D.C. Government Printing Office 1922 - pp. 441-446
Impreso
Ingles
MINERIA
Gold, silver, copper, and lead in Alaska in 1920 : Mines report. - Washington, D.C. Government Printing Office 1922 - pp. 441-446
Impreso
Ingles
MINERIA