Timourian, H Fertilization in the sea-urchin as a function of sperm-to-egg ratio. [electronic resource] - Journal of reproduction and fertility Jun 1972 - 381-5 p. digital Publication Type: Journal Article ISSN: 0022-4251 Standard No.: 10.1530/jrf.0.0290381 doi Subjects--Topical Terms: AnimalsFemaleFertilizationMaleModels, BiologicalOvumSea UrchinsSeawaterSpectrophotometrySperm CapacitationSpermatozoa