TY  - RPRT
TI  - Changing perceptions of United States natural-gas resources as shown by successive U. S. Department of the Interior assessments
AU  - James W. Schmoker
AU  - Thaddeus S. Dyman
PY  - 2001
DO  - 10.3133/b2172b
UR  - https://pubs.usgs.gov/publication/b2172B
ID  - b2172B
ER  -