ocr: ZUSGS science fora a changing world Map Showing Geology, Oil and Gas Fields, and Geologic Provinces ofthe Former Soviet Union Compiled by F. M. Persits,2G. F. Ulmishek, and D.W. Steinshouer- CD-ROM design and implementation: B.S. Larson! 'U.S. Geological Survey, Denver, CO Contractor to the U.S. Geological Survey, Denver, CO U.S. Department of the Interior Open File Report 97-470E U.S. Geological Survey 1998
