TY - RPRT TI - Maps showing altitude of the potentiometric surface and changes in water levels in the aquifer in the Sparta and Memphis Sands in eastern Arkansas, spring 1985 AU - Joe Edds AU - D. J. Fitzpatrick PY - 1986 DO - 10.3133/wri864084 UR - https://pubs.usgs.gov/publication/wri864084 ID - wri864084 ER -