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SeaLifeBase
SeaLifeBase References for Colwin, L.H., A.L. Colwin and D.E.
Philpott, 1957
Ref. No.
Title
1313
Electron Microscope Studies of Early Stages of Sperm Penetration in
Hydroides hexagonus
(Annelida) and
Saccoglossus kowalevkii
(Enteropneusta).