TY  - RPRT
TI  - Methane-concentration and methane-isotope data for ground water and soil gas in the Animas River Valley, Colorado and New Mexico, 1990-91
AU  - Daniel T. Chafin
AU  - David M. Swanson
AU  - David W. Grey
PY  - 1996
DO  - 10.3133/wri934007
UR  - https://pubs.usgs.gov/publication/wri934007
ID  - wri934007
ER  -