TY - RPRT TI - Bedrock geologic map showing configuration of the bedrock surface in the Nebraska part of the Sioux City 1 degree by 2 degrees Quadrangle AU - R.R. Burchett AU - V. H. Dreeszen AU - V. L. Souders AU - G.E. Prichard PY - 1988 DO - 10.3133/i1879 UR - https://pubs.usgs.gov/publication/i1879 ID - i1879 ER -