TY  - RPRT
TI  - Diurnal effects on the helium concentration in soil-gas and near-surface atmosphere
AU  - G. Michael Reimer
AU  - Alan A. Roberts
AU  - E.H. Denton
PY  - 1976
DO  - 10.3133/ofr76715
UR  - https://pubs.usgs.gov/publication/ofr76715
ID  - ofr76715
ER  -