TY  - RPRT
TI  - Survey of helium in natural water wells and springs in Southwest Montana and vicinity
AU  - Willis P. Doering
AU  - Irving Friedman
PY  - 1980
DO  - 10.3133/ofr80181
UR  - https://pubs.usgs.gov/publication/ofr80181
ID  - ofr80181
ER  -