Geological Survey U.S. · 4 obras en el catálogoObrasMMineral Resources of the Appalachian Region (Geological SurvMineral Resources of the Appalachian Region (Geological Survey Professional Paper, 580)SSurface water supply of Middle Atlantic states, 1906. (SusquSurface water supply of Middle Atlantic states, 1906. (Susquehanna, Gunpowder, Patapsco, Potomac, James, Roanoke, and Yadkin river drainages)LLandscapes of AlaskaLandscapes of AlaskaTThe Poison Ridge volcanic center and related mineralization,The Poison Ridge volcanic center and related mineralization, Grand and Jackson Counties, Colorado
MMineral Resources of the Appalachian Region (Geological SurvMineral Resources of the Appalachian Region (Geological Survey Professional Paper, 580)
SSurface water supply of Middle Atlantic states, 1906. (SusquSurface water supply of Middle Atlantic states, 1906. (Susquehanna, Gunpowder, Patapsco, Potomac, James, Roanoke, and Yadkin river drainages)
TThe Poison Ridge volcanic center and related mineralization,The Poison Ridge volcanic center and related mineralization, Grand and Jackson Counties, Colorado