TY  - RPRT
TI  - Geochemical survey of the western energy regions, 4th annual progress report, July 1977
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr77872
UR  - https://pubs.usgs.gov/publication/ofr77872
ID  - ofr77872
ER  -