Lewis William M Eutrophieation and land use Lake Dillon, Colorad Lewis William M - New York Springer-Verlag U S A 1984 - x,202p. Bib p. 193-98 cm. - Ecological Studies. 46 . Source: General Book Subjects--Topical Terms: Geomorphology Dewey Class. No.: U2154:(G:5).7343.N8, M4