TY  - RPRT
TI  - Geochemical Survey of Missouri: Plans and progress for sixth six-month period (January-June 1972)
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1972
DO  - 10.3133/ofr72403
UR  - https://pubs.usgs.gov/publication/ofr72403
ID  - ofr72403
ER  -