Hydromedusae Famillies: Clavidae and Hydractiniidae
Russell, F.S. (1951). Hydromedusae Famillies: Clavidae and Hydractiniidae. Replaced by sheet no. 154. Fiches d'identification du zooplancton, 31. ICES: Copenhagen. 4 pp.
Part of: Fiches d'identification du zooplancton. Conseil International pour l'Exploration de la Mer: Charlottenlund. ISSN 0443-9155, more
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