TY - RPRT TI - Potentiometric Surfaces and Water-Level Trends in the Cockfield and Wilcox Aquifers of Southern and Northeastern Arkansas, 2006 AU - T. P. Schrader PY - 2007 DO - 10.3133/sir20075218 UR - https://pubs.usgs.gov/publication/sir20075218 ID - sir20075218 ER -