1. Geohydrology and potential effects of coal mining in 12 coal-lease areas, Powder River structural basin, northeastern Wyoming Author/Creator: Fogg, James L., author Publication/Creation: Cheyenne, Wyoming : U.S. Geological Survey, 1991 Format: Book Access & Availability: Loading
2. Hydrogeology and simulation of water flow in strata above the Bearpaw Shale and equivalents of eastern Montana and northeastern Wyoming Author/Creator: Hotchkiss, W. R., author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1986 Format: Book Access & Availability: Loading