Fryer, Geoffrey. The cichlid fishes of the great lakes of Africa : their biology a nd evolution / by Geaffrey Fryer and T. D. Iles - Edinburg : liver & Boyd , 1972. - xvi, 641, [12]p. : ill., maps ; 25cm Bibliography: p. 594-610. Subjects--Topical Terms: CichlidaeFreshwater fishes Dewey Class. No.: 597.58