TY  - RPRT
TI  - APRAS; analytic petroleum resource appraisal system; microcomputer programs for play analysis using a field-size model
AU  - Robert A. Crovelli
AU  - Richard H. Balay
PY  - 1992
DO  - 10.3133/ofr9221
UR  - https://pubs.usgs.gov/publication/ofr9221
ID  - ofr9221
ER  -