TY - RPRT TI - Geology and ground-water resources of Fillmore County, Nebraska, with a section on chemical quality of the water AU - Charles Franklin Keech AU - V. H. Dreeszen AU - L. R. Petri PY - 1968 DO - 10.3133/wsp1839l UR - https://pubs.usgs.gov/publication/wsp1839L ID - wsp1839L ER -