TY  - RPRT
TI  - Reconnaissance survey of the helium content of soil gas in Black Hawk, Eldorado Springs, Evergreen, Golden, Morrison, Ralston Buttes, and Squaw Pass quadrangles, Colorado
AU  - G. Michael Reimer
AU  - C.W. Adkisson
PY  - 1977
DO  - 10.3133/ofr77464
UR  - https://pubs.usgs.gov/publication/ofr77464
ID  - ofr77464
ER  -