The type specimens of Sipuncula and Echiura described by J. E. Gray and W. Baird in the collections of the British Museum (Natural History)
Rice, Mary Esther Stephen, Alexander Charles
Article
1970
Bulletin of the British Museum (Natural History) Zoology
20
47--72
BioStor
English
London, BM(NH),
BioStor: https://biostor.org/reference/109499
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