TY  - RPRT
TI  - The Niger Delta petroleum system; Niger Delta Province, Nigeria, Cameroon, and equatorial Guinea, Africa
AU  - Michele L. Tuttle
AU  - Ronald R. Charpentier
AU  - Michael E. Brownfield
PY  - 1999
DO  - 10.3133/ofr9950h
UR  - https://pubs.usgs.gov/publication/ofr9950H
ID  - ofr9950H
ER  -