TY  - RPRT
TI  - World resources of crude oil, natural gas, natural bitumen, and shale oil
AU  - C.D. Masters
AU  - Emil D. Attanasi
AU  - William D. Dietzman
AU  - R. F. Meyer
AU  - R.W. Mitchell
AU  - D. H. Root
PY  - 1987
UR  - https://pubs.usgs.gov/publication/70200169
ID  - 70200169
ER  -