Culley et al., 1973. J. Water Poll. Control Fed., 45 (2): 337-347 Document reference Culley, D. D. ; Epps, E. A., 1973. Use of duckweed for waste treatment and animal feed. J. Water Poll. Control Fed., 45 (2): 337-347Web http://www.jstor.org/stable/25037746Citation key Culley et al., 1973Datasheets Duckweed
