TY - RPRT TI - Characterization of fill deposits in the Calumet region of northwestern Indiana and northeastern Illinois AU - Robert T. Kay AU - Theodore K. Greeman AU - Richard F. Duwelius AU - Robin B. King AU - John E. Nazimek AU - David M. Petrovski PY - 1997 DO - 10.3133/wri964126 UR - https://pubs.usgs.gov/publication/wri964126 ID - wri964126 ER -