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Published in Asa Gray correspondence. Senders Be-Bo, in 1890, pages 1

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Published in Asa Gray correspondence. Senders Be-Bo, in 1891, pages 1

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Published in Memoirs of the Queensland Museum, in 1991, in volume 31, pages 404

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Published in Occasional papers on mollusks, in 1975, in volume 4, issue 52, pages 93-102

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Published in Proceedings of The American Philosophical Society, in 1897, in volume 36, issue 155, pages 179-192

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