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Koehler, R. (1927). Echinides du Musée Indien á Calcutta, III: Echinides réguliers. Echinoderma of the Indian Museum. 10: 1-158.
Koehler, R. (1927). Echinides du Musée Indien á Calcutta, III: Echinides réguliers. Echinoderma of the Indian Museum. 10: 1-158.