Stephen, A. C. & Edmonds, S. J., 1972, The phyla Sipuncula and Echiura

Stephen, A. C. & Edmonds, S. J., 1972, The phyla Sipuncula and Echiura, London

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urn:lsid:zoobank.org:pub:74A861AFD55049F0AFAE89D9FF153CFE

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