John, D. D. & Clark, A. M. (1954). The “Rosaura” expedition. 3. The echinodermata. Bulletin of the British Museum (Natural History) Zoology. 2, 139-162, pl. 6.
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John, D. D. & Clark, A. M.
1954
The “Rosaura” expedition. 3. The echinodermata
Bulletin of the British Museum (Natural History) Zoology