Published in Palaeontology, in 1974, in volume 17, issue 1, pages 1-40

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Published in Journal of Raptor Research, in 1990, in volume 24, issue 3, pages 72-74

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Published in Bulletin of Zoological Nomenclature, in 2001, in volume 58, issue 4, pages 291-293

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Published in John Carey letters to Asa Gray, 1837-2220, pages 1-2

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in 1853, pages 1-2

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Published in John Carey letters to Asa Gray, 1837-1981, pages 1-2

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Published in John Carey letters to Asa Gray, 1837-1983, pages 1-2

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Published in John Carey letters to Asa Gray, 1837-1985, pages 1-2

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Published in John Carey letters to Asa Gray, 1837-1987, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-2206, in 1868, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, pages 1

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Published in John Ball letters to Asa Gray, 1876-1888, pages 1

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Published in John Carey letters to Asa Gray, 1837-1932, in 1847, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1935, in 1847, pages 1-5

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Published in John Carey letters to Asa Gray, 1837-1940, in 1847, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1943, in 1847, pages 1-5

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Published in John Carey letters to Asa Gray, 1837-1920, in 1846, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1923, in 1846, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1926, in 1846, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1960, in 2017, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1917, in 1846, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1929, in 1847, pages 1-3

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Published in John Carey letters to Asa Gray, 1837-1948, in 1847, pages 1-3

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Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2

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Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2

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