TY  - RPRT
TI  - Survey of helium in natural water wells and springs in southwest Montana and vicinity; Part II
AU  - Willis P. Doering
AU  - Irving Friedman
PY  - 1980
DO  - 10.3133/ofr801257
UR  - https://pubs.usgs.gov/publication/ofr801257
ID  - ofr801257
ER  -