TY  - RPRT
TI  - Regional water-level changes for the Cambrian-Ordovician aquifer in Iowa, 1975 to 1997
AU  - Michael J. Turco
PY  - 1999
DO  - 10.3133/wri994134
UR  - https://pubs.usgs.gov/publication/wri994134
ID  - wri994134
ER  -