TY  - RPRT
TI  - Index of surface-water records to September 30, 1970; Part 7, Lower Mississippi River basin
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1972
DO  - 10.3133/cir657
UR  - https://pubs.usgs.gov/publication/cir657
ID  - cir657
ER  -