TY  - RPRT
TI  - Ranking of the world's oil and gas provinces by known petroleum volumes
AU  - T. R. Klett
AU  - Thomas S. Ahlbrandt
AU  - J. W. Schmoker
AU  - G.L. Dolton
PY  - 1997
DO  - 10.3133/ofr97463
UR  - https://pubs.usgs.gov/publication/ofr97463
ID  - ofr97463
ER  -