TY  - RPRT
TI  - Summary of ground-water hydrology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States
AU  - H. L. Young
PY  - 1992
DO  - 10.3133/pp1405a
UR  - https://pubs.usgs.gov/publication/pp1405A
ID  - pp1405A
ER  -