You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Chippewa Remove constraint Place: Chippewa Place Margin of Tahquamenon river below lower falls above Emerson Remove constraint Place: Margin of Tahquamenon river below lower falls above Emerson Place USA Remove constraint Place: USA Topic Potamogeton Remove constraint Topic: Potamogeton Topic Potamogetonaceae Remove constraint Topic: Potamogetonaceae