Geological research in the gold -bearing areas of Siberia: Len.Zolotosos.rn.Ext.1-12.Ext.five

Geological research in the gold -bearing areas of Siberia: Len.Zolotosos.rn.Ext.1-12.Ext.5. - St. Petersburg: Type.M.M. Stasyulevich, 1910. -Def.Scanning: absence.Card revolutions..Source of an electronic copy: Kuzbass GNB named afterV.D. Fedorova