1. Hydrogeologic maps of the central Oklahoma aquifer, Oklahoma Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
2. Hydrogeologic terranes and potential yield of water to wells in the Valley and Ridge Physiographic Province in Maryland, New Jersey, and Pennsylvania Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : The Survey, 1996 Resource Type: Map Access & Availability: Loading