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Knight-Jones, Phyllis; Knight-Jones, E. Wyn; Thorp, Clifford H.; Gray, Peter W. G. (1975). Immigrant spirorbids (Polychaeta sedentaria) on the Japanese Sargassum at Portsmouth, England. Zoologica Scripta. 4(4): 145-149.
Knight-Jones, Phyllis; Knight-Jones, E. Wyn; Thorp, Clifford H.; Gray, Peter W. G. (1975). Immigrant spirorbids (Polychaeta sedentaria) on the Japanese Sargassum at Portsmouth, England. Zoologica Scripta. 4(4): 145-149.