Su, K Lee Aquatic plants from Minnesota - Minneapolis: Water Resources Research Center, University of Minnesota Graduate School, 1972 - vii, 49p. - University of Minnesota. Water Resources Research Center, Bulletin 46 . Part-1 (Chemical survey); vii, 49p. Subjects--Topical Terms: Materia medica, Vegetable Subjects--Index Terms: Freshwater plants-Composition Universal Decimal Class. No.: 581(204) / M3.1