Report on County Resources Maryland. Department of Geology, Mines, and Water Resources Published: 1902 Total Pages: 676 Get eBook
Catalog of Books and Reports in the Bureau of Mines Technical Library, Pittsburgh, Pa United States. Bureau of Mines. Technical Library, Pittsburgh Published: 1968 Total Pages: 792 Get eBook
County Reports and Maps West Virginia Geological and Economic Survey Published: 1914 Total Pages: 682 Get eBook
Report of the Conservation Commission of Maryland for 1908-1909 Maryland. Conservation Commission Published: 1909 Total Pages: 240 Get eBook
