TY - RPRT TI - Potentiometric surfaces of November 1989 and declines in the potentiometric surfaces between November 1982 and November 1989 for the Black Creek and Middendorf Aquifers in South Carolina AU - Whitney J. Stringfield AU - B. G. Campbell PY - 1993 DO - 10.3133/wri924000 UR - https://pubs.usgs.gov/publication/wri924000 ID - wri924000 ER -