Version history for Phelps, Geoffrey A., Roberts, Carter W., and Moring, Barry C., 2005, Preliminary gravity inversion model of basins east of Yucca Flat, Nevada Test Site, Nevada: U.S. Geological Survey Open-File Report 2005-1313, 21 p. [available on the World Wide Web at URL http://pubs.usgs.gov/of/2005/1313/ ]. Version 1.0, March 20, 2006 Intital release online at http://pubs.usgs.gov/of/2005/1313/