TY  - RPRT
TI  - Tabulation of N 2 , O 2 , CO 2 , and He concentrations in soil gases collected daily for 11 months from 0.3-, 0.6-, 1.2-, and 2.0-m depths
AU  - M. E. Hinkle
PY  - 1990
DO  - 10.3133/ofr90686
UR  - https://pubs.usgs.gov/publication/ofr90686
ID  - ofr90686
ER  -