Geochemistry of the Cambrian-Ordovician aquifer system in the northern Midwest, United StatesDonald I. Siegel · First published 1989Open the Tome
Effect of snowmelt on the quality of Filson Creek and Omaday Lake, Northeastern MinnesotaDonald I Siegel · First published 1982Open the Tome
Hydrologic setting of Williams Lake, Hubbard County, MinnesotaDonald I Siegel · First published 1980Open the Tome
Hydrology and water quality of the copper-nickel study region, northeastern MinnesotaDonald I Siegel · First published 1980Open the Tome
