TY - RPRT TI - Ground-water flow in the Gulf Coast aquifer systems, south central United States — A preliminary analysis AU - A. K. Williamson AU - H. F. Grubb AU - J. S. Weiss PY - 1990 DO - 10.3133/wri894071 UR - https://pubs.usgs.gov/publication/wri894071 ID - wri894071 ER -