TY  - RPRT
TI  - U. S. Geological Survey programs in water quality - looking toward the 1990's
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1988
DO  - 10.3133/ofr8972
UR  - https://pubs.usgs.gov/publication/ofr8972
ID  - ofr8972
ER  -