. . . . . "U.S.Geological Survey" . . . . . . . . . . . "USGS" . "United States Geological Survey (USGS)." . . . . . "U.S. Geological Survey Map" . . . "quads" . "the U.S. Geological Survey (USGS)" . . . . . . . . . "(USGS)" . "USGS Helena" . "Alaska Geospatial Data Clearinghouse" . . . . . . . "USGS 7.5' map" . . . . "U.S. Geological Survey National Earthquake Information Center" . "USPS" . "US Geologic Survey" . "Geological Survey" . . . . . "United States Geological Survey" . "United States Geological Service" . . "United States Geological Survey 7.5' topographic map" . "1879-03-03" . . "United States Geological Survey#USGS Hydrologic Instrumentation Facility" . . . "U.S. Geodetic Survey" . . . . . . "United States Geological Survey#USGS publications" . . . . "National Water-Quality Assessment Program" . . . . . . . . "U.S. Geological Survey (USGS)" . . . "United States Geological Society" . . . . . "''(USGS)''" . . . "United_States_Geological_Survey#USGS_publications" . "1879" . "U.S. Geologic Survey" . . . . . "USGS 40075G8, 1947&'83" . . . "US Geological Survey (USGS)" . . . . . "The United States Geological Survey" . . . "United States Geological Survey (USGS)" . . . . . "U.S. Geological Survey Professional Paper" . . . . . . . "United States Geological Survey#Programs" . . "U.S.G.S" . . . . . "USGS 7.5' topographic map" . "US Geological Survey" . . . . . . . . "U.S. Geographical Survey" . . "United States Geological Survey" . . . . . "United States Geological Survey's" . "US Geological Service" . "USGS Bulletin" . . . . . "U.S Geological Survey" . . "United States Geological Survey" . . . . . "United States Geological Survey" . . . . . . . . "United States Geologic Survey's" . . . "United States Coast and Geodetic Survey" . . "U. S. Geological Survey" . . "U.S. Geological & Geographic Survey" . "United States Geological Survey, Denver office" . . . . . "USGS's" . . . . . . "United States Geological Survey#Center%20for%20Coastal%20Geology" . . . "United States Geological Survey#Accelerated decline in subterranean reservoirs" . . . . "8670" . . . "survey of the American West" . "United States Geological Survey (USGS) gauge" . . "1.16E9" . . . . . . . . "U.S. Geological Survey" .