TY - RPRT TI - Louisiana ground-water map no. 7: Potentiometric surface, 1991, and water-level changes, 1969-91, of the Chicot equivalent aquifer system in southeastern Louisiana AU - David J. Walters PY - 1995 DO - 10.3133/wri944202 UR - https://pubs.usgs.gov/publication/wri944202 ID - wri944202 ER -