Siziya, Seter Aggregation in schistosomiasis: comparison of the relationships between prevalence and intensity in different endemic areas by Seter Siziya; [and others] - Oxford: Cambridge University Press 1994 - p. 45 - p. 55: ill. - Parasitology Vol. 109 . Bibliography Subjects--Topical Terms: SCHISTOSOMIASIS LC Class. No.: PAPERS/STAFF/SIZIYA