Report of an Examination of the Bear Valley Coal District, in Dauphin County, Pennsylvania.Walter Rogers JohnsonHäftad, 2011249 kr
scientific writings of James SmithsonWilliam Jones Rhees, James Smithson, Walter Rogers JohnsonHäftad, 2017369 kr
scientific writings of James SmithsonWilliam Jones Rhees, James Smithson, Walter Rogers JohnsonHäftad, 2017369 kr
Report of an Examination of the Bear Valley Coal District, in Dauphin County, Pennsylvania.Walter Rogers JohnsonHäftad, 2011249 kr