Raymond, K M The effect of light and darkness on the production of cercariae of Schistosoma haematobium from Bulinus globosus. [electronic resource] - Journal of helminthology Dec 1987 - 291-6 p. digital Publication Type: Journal Article ISSN: 0022-149X Standard No.: 10.1017/s0022149x00010191 doi Subjects--Topical Terms: AnimalsBulinus--parasitologyCircadian RhythmSchistosoma haematobium--physiology