You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Kent Remove constraint Place: Kent Place North America Remove constraint Place: North America Place Ravine at Alaska - on Thornapple - about 19 miles S.E. of Grand Rapids. Remove constraint Place: Ravine at Alaska - on Thornapple - about 19 miles S.E. of Grand Rapids. Topic Brassicales Remove constraint Topic: Brassicales Topic Magnoliopsida Remove constraint Topic: Magnoliopsida