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Nordheim, Henning von (1989). Six new species of Protodrilus (Annelida, Polychaeta) from Europe and New Zealand, with a concise presentation of the genus. Zoologica Scripta 18 (2), 245–268.
Nordheim, Henning von (1989). Six new species of Protodrilus (Annelida, Polychaeta) from Europe and New Zealand, with a concise presentation of the genus. Zoologica Scripta 18 (2), 245–268.