TY - RPRT TI - Louisiana ground-water map no. 4: Potentiometric surface, 1989, and water-level changes, 1984-89, of the Jasper aquifer system in west-central Louisiana AU - Charles W. Smoot AU - Ronald C. Seanor PY - 1992 DO - 10.3133/wri914137 UR - https://pubs.usgs.gov/publication/wri914137 ID - wri914137 ER -