1. Map showing geology, oil and gas fields, and geologic provinces of Africa Author/Creator: Geological Survey (U.S.) Publication/Creation: [Denver, Colo.] : [For sale by USGS Information Services (Open-File Report Sales)]. Resource Type: Map Edition: Version 2.0. Access & Availability: Loading
2. Maps showing geology, oil and gas fields, and geologic provinces of South America Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : The Survey : USGS Information Service, 1999 Resource Type: Map Access & Availability: Loading
3. Maps showing geology, oil and gas fields, and geologic provinces of the Arctic Author/Creator: Persits, F. M., compiler Publication/Creation: [Reston, Virginia] : U.S. Department of the Interior, U.S. Geological Survey, 2003 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading