TY - RPRT TI - Water levels in aquifers in the Nacatoch Sand of southwestern and northeastern Arkansas and the Tokio Formation of southwestern Arkansas, spring 2008 AU - T. P. Schrader AU - Joshua M. Blackstock PY - 2010 DO - 10.3133/sir20105238 UR - https://pubs.usgs.gov/publication/sir20105238 ID - sir20105238 ER -