Geology and mineral deposits of the James River-Roanoke River Manganese district, Virginia : a description of the geology and mineral deposits, particularly manganese, of the James River-Roanoke River district /

Autor Epenshade, Gilbert Howry
Vydáno 1954

Geologic setting of the Hamme tungsten district North Carolina and Virginia : contributions to economic geology /

Autor Parker, John M.
Vydáno 1963