1. Nebraska, Kansas, and Oklahoma aeromagnetic and gravity maps and data, a web site for distribution of data Author/Creator: Sweeney, Ronald E. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, [2005] Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
2. Six aeromagnetic surveys in California, Nevada, and Arizona : a Web site for distribution of data Author/Creator: Sweeney, Ronald E. Publication/Creation: [Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Edition: Version 1.0. Access & Availability: Loading