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Published in Proceedings of The American Philosophical Society, in 1905, in volume 44, issue 179, pages 66-68
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Published in Proceedings of The American Philosophical Society, in 1907, in volume 46, issue 185, pages 117-123
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Published in The Wilson Bulletin, in 1986, in volume 98, issue 1, pages 126-131
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Published in Torreya, in 1939, in volume 39, issue 1, pages 15-16
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Published in Proceedings of The American Philosophical Society, in 1908, in volume 47, issue 189, pages 302-328
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Published in Proceedings of The American Philosophical Society, in 1882, in volume 20, issue 111, pages 230-231
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Published in Brimleyana, in 1985, in volume 10, pages 37-52
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Published in Biol Bull, in 1987, in volume 173, pages 252-259
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Published in Bulletin of the British Ornithologists' Club, in 2016, in volume 136, issue 4, pages 295-299
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Published in Transactions of the San Diego Society of Natural History, in 1976, in volume 18, pages 169-183
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Published in Bulletin of The British Ornithologists' Club, in 2008, in volume 128, issue 1, pages 17-27
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Published in Proceedings of the Biological Society of Washington, in 1976, in volume 89, pages 477-480
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Published in Brimleyana, in 1993, in volume 18, pages 59-64
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Published in Asa Gray correspondence : letters from Asa Gray to various individuals, 1838-1931 (inclusive), 1838-1888 (bulk), pages 1-2
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Published in The Auk, in 1920, in volume 37, pages 610-611
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Species and Speciation in Phylogenetic Systematics, with Examples from the North American Fish Fauna
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Published in Revue Suisse De Zoologie, in 1957, in volume 64, pages 733-741
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Published in Nautilis, in 1907, in volume 20, pages 142-143
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Published in Nautilis, in 1909, in volume 23, pages 15-16
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Published in Proceedings of The Biological Society of Washington, in 1951, in volume 64, pages 65-72
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Published in Nautilis, in 1896, in volume 10, pages 73-75
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Published in Nautilis, in 1909, in volume 23, pages 68-69
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Published in Nautilis, in 1914, in volume 28, pages 58-59
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Published in Nautilis, in 1921, in volume 35, pages 49-50
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Published in Nautilis, in 1925, in volume 39, pages 68-69
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Published in Rhodora, in 1902, in volume 4, issue 39, pages 55-57
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Published in Rhodora, in 1911, in volume 13, issue 151, pages 168-171
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Published in Rhodora, in 1936, in volume 38, issue 447, pages 99-100
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Published in Rhodora, in 1937, in volume 39, issue 460, pages 101-105
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Published in Emu, in 1922, in volume 22, pages 66
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Published in Botanical Gazette, in 1882, in volume 7, issue 8/9, pages 108-109
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Published in Torreya, in 1940, in volume 40, issue 6, pages 213-218
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Published in Biol Bull, in 1964, in volume 127, pages 159-172
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Published in The Wilson Bulletin, in 1951, in volume 63, issue 1, pages 60-62
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Published in The Wilson Bulletin, in 1953, in volume 65, issue 2, pages 124-125
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Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 149-163
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