TY  - RPRT
TI  - Development and use of a mathematical model of the San Bernardino Valley ground-water basin, California
AU  - William F. Hardt
AU  - C. B. Hutchinson
PY  - 1980
DO  - 10.3133/ofr80576
UR  - https://pubs.usgs.gov/publication/ofr80576
ID  - ofr80576
ER  -