TY  - RPRT
TI  - National assessment of helium resources within known natural gas reservoirs
AU  - Sean T. Brennan
AU  - Jennifer L. Rivera
AU  - Brian A. Varela
AU  - Andy J. Park
PY  - 2021
DO  - 10.3133/sir20215085
UR  - https://pubs.usgs.gov/publication/sir20215085
ID  - sir20215085
ER  -