TY  - RPRT
TI  - Procedures for petroleum resource assessment used by the U.S. Geological Survey; statistical and probabilistic methodology
AU  - Robert A. Crovelli
PY  - 1983
DO  - 10.3133/ofr83402
UR  - https://pubs.usgs.gov/publication/ofr83402
ID  - ofr83402
ER  -