TY  - RPRT
TI  - Unconventional shallow biogenic gas systems
AU  - G. W. Shurr
AU  - J.L. Ridgley
PY  - 2002
DO  - 10.1306/61eeddc8-173e-11d7-8645000102c1865d
UR  - https://pubs.usgs.gov/publication/70024183
ID  - 70024183
ER  -