TY - RPRT TI - Characterization of the structure, clean-sand percentage, dissolved-solids concentrations, and estimated quantity of groundwater in the Upper Cretaceous Nacatoch Sand and Tokio Formation, Arkansas AU - Jonathan A. Gillip PY - 2014 DO - 10.3133/sir20145068 UR - https://pubs.usgs.gov/publication/sir20145068 ID - sir20145068 ER -