TY - RPRT TI - Louisiana ground-water map no. 21, generalized potentiometric surface of the Evangeline Aquifer in south-central Louisiana, January-March 2004 AU - Robert B. Fendick PY - 2005 DO - 10.3133/sim2880 UR - https://pubs.usgs.gov/publication/sim2880 ID - sim2880 ER -