TY - RPRT TI - Geochemical survey of Missouri, plans and progress for seventh six-month period (June-December 1972) AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1969 DO - 10.3133/ofr73326 UR - https://pubs.usgs.gov/publication/ofr73326 ID - ofr73326 ER -