TY  - RPRT
TI  - Estimated petroleum resources in the former Soviet Union
AU  - G. F. Ulmishek
AU  - C.D. Masters
PY  - 1993
DO  - 10.3133/ofr93316
UR  - https://pubs.usgs.gov/publication/ofr93316
ID  - ofr93316
ER  -