TY  - RPRT
TI  - Hydrology of the Mississippi River Valley alluvial aquifer, south- central United States — A preliminary assessment of the regional flow system
AU  - D. J. Ackerman
PY  - 1989
DO  - 10.3133/wri884028
UR  - https://pubs.usgs.gov/publication/wri884028
ID  - wri884028
ER  -