1. Map showing free-air gravity anomalies in parts of the western Caribbean Sea Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey, 1990 Resource Type: Map Access & Availability: Loading
2. Map showing free-air gravity anomalies off the southern coast of west-central Africa Liberia to Ghana Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey Survey, 1990 Resource Type: Map Access & Availability: Loading