TY  - RPRT
TI  - A surface vitrinite reflectance anomaly related to Bell Creek oil field, Montana, U.S.A.
AU  - C.E. Barker
AU  - M.C. Dalziel
AU  - M. J. Pawlewicz
PY  - 1983
DO  - 10.3133/ofr83826
UR  - https://pubs.usgs.gov/publication/ofr83826
ID  - ofr83826
ER  -