TY - RPRT TI - Geology and ground-water hydrology of the Angostura irrigation project, South Dakota, with a section on the mineral quality of the waters AU - Robert T. Littleton AU - Herbert A. Swenson PY - 1949 DO - 10.3133/cir54 UR - https://pubs.usgs.gov/publication/cir54 ID - cir54 ER -