1. Isostatic gravity map of the Victorville 1:100,000 scale quadrangle, California [microform] Yale Public content 1995. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Information Services. English. Public. California, Kern County, Los Angeles County, and San Bernardino County.