TY - RPRT TI - Predevelopment freshwater heads in the glaciofluvial, Saginaw, and Marshall aquifers in the Michigan Basin AU - Gary J. Barton AU - Richard J. Mandle AU - Matthew A. Baltusis PY - 1996 DO - 10.3133/ofr95319 UR - https://pubs.usgs.gov/publication/ofr95319 ID - ofr95319 ER -