1. Regional stratigraphy and petroleum systems of the Illinois Basin, U.S.A Author/Creator: Swezey, C. (Christopher) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2009 Resource Type: Map Access & Availability: Loading
2. Regional stratigraphy and petroleum systems of the Illinois Basin, U.S.A Author/Creator: Swezey, C. (Christopher) Publication/Creation: Denver, Colo. : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
3. Regional stratigraphy and petroleum systems of the Michigan Basin, North America Author/Creator: Swezey, C. (Christopher) Publication/Creation: Denver, Colo. : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading