TY  - RPRT
TI  - Changes in chloride concentration in water from municipal wells that tap aquifers in rocks of Cambrian and Ordovician age in northeastern Illinois, 1915–84
AU  - G. O. Balding
PY  - 1991
DO  - 10.3133/wri904116
UR  - https://pubs.usgs.gov/publication/wri904116
ID  - wri904116
ER  -