TY  - RPRT
TI  - Ground-water levels in the United States, 1968-72, northeastern states
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1974
DO  - 10.3133/wsp2140
UR  - https://pubs.usgs.gov/publication/wsp2140
ID  - wsp2140
ER  -