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Authors whose works are in public domain in at least one jurisdiction

List of works by Robert Tracy Jackson

Fossil Echini of the West Indies ⬇️

Washington: Carnegie Institution of Washington, 1922.

Phylogeny of the Echini, with a revision of Palaeozoic species ⬇️

Boston, The Society, 1912.

Phylogeny of the Pelecypoda : the Aviculidae and their allies ⬇️

Boston: Boston Society of Natural History, 1890.

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