TY  - RPRT
TI  - Methane, carbon dioxide, oxygen, and nitrogen in soil gas overlying coal beds of the Upper Cretaceous Fruitland Formation in the San Juan Basin, La Plata County, southwestern Colorado
AU  - J. R. Herring
AU  - J.S. Ciener
AU  - J.M. Been
AU  - S.L. Szrzi
AU  - G.M. Reimer
AU  - D. D. Rice
AU  - B.C. Boyce
PY  - 1994
DO  - 10.3133/ofr94295
UR  - https://pubs.usgs.gov/publication/ofr94295
ID  - ofr94295
ER  -