Data Series 1004
Historical Files from Federal Government Mineral Exploration-Assistance Programs, 1950 to 1974
By David G. Frank
U.S. Department of the Interior
U.S. Geological Survey
Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text.
Frank, D.G., 2016, Historical files from Federal Government mineral exploration-assistance Programs, 1950 to 1974: U.S. Geological Survey Data Series 1004, http://dx.doi.org/10.3133/ds1004.