TY  - RPRT
TI  - Helium concentrations in soil-gas over known petroleum accumulations, WaKeeney area, Trego County, Kansas
AU  - K.I. Cunningham
PY  - 1987
DO  - 10.3133/ofr87254
UR  - https://pubs.usgs.gov/publication/ofr87254
ID  - ofr87254
ER  -