TY  - RPRT
TI  - Potentiometric surfaces of the Mississippi River Valley alluvial aquifer in eastern Arkansas, spring 1972 and 1980
AU  - D. J. Ackerman
PY  - 1989
DO  - 10.3133/wri884075
UR  - https://pubs.usgs.gov/publication/wri884075
ID  - wri884075
ER  -