TY  - RPRT
TI  - National research program: Ground-water perspective
AU  - Roger G. Wolff
AU  - Jerry C. Stephens
AU  - Linda C. Friedman
PY  - 1988
DO  - 10.3133/ofr88314
UR  - https://pubs.usgs.gov/publication/ofr88314
ID  - ofr88314
ER  -