Croskery, Peter R.2009-03-232009-03-2319741974Source: Masters Abstracts International, Volume: 40-07, page: .http://hdl.handle.net/10393/6972http://dx.doi.org/10.20381/ruor-15095Biology, Limnology.Habitat preference and frequency groupings of Cladocera in a segment of the Ottawa River, near Ottawa, Canada.Thesis