TY  - RPRT
TI  - Regional Aquifer-System Analysis Program of the U.S. Geological Survey, 1978-1992
AU  - Ren Jen Sun
AU  - Richard H. Johnston
PY  - 1994
DO  - 10.3133/cir1099
UR  - https://pubs.usgs.gov/publication/cir1099
ID  - cir1099
ER  -