TY - RPRT TI - Geohydrology and ground-water-flow simulation of the Surprise Spring basin aquifer system, San Bernardino County, California AU - C.J. Londquist AU - P.R. Martin PY - 1991 DO - 10.3133/wri894099 UR - https://pubs.usgs.gov/publication/wri894099 ID - wri894099 ER -