Pirie, 1970. Ceres, 3 (4): 31–34 Document reference Pirie, N.W., 1970. Weeds are not all bad. Water hyacinths and other pests can also be good animal fodder. Ceres, 3 (4): 31–34Web http://www.cabdirect.org/abstracts/19722302124.htmlCitation key Pirie, 1970Datasheets Water hyacinth (Eichhornia crassipes)
