TY  - RPRT
TI  - Hydrology of the Mississippi River Valley alluvial aquifer, South-Central United States
AU  - D. J. Ackerman
PY  - 1990
DO  - 10.3133/ofr90358
UR  - https://pubs.usgs.gov/publication/ofr90358
ID  - ofr90358
ER  -