TY - RPRT TI - Geologic structure, hydrology, and water quality of the Arapahoe aquifer in the Denver Basin, Colorado AU - Stanley G. Robson AU - John C. Romero AU - Stanley Zawistowski PY - 1981 DO - 10.3133/ha647 UR - https://pubs.usgs.gov/publication/ha647 ID - ha647 ER -