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  1. 1
    November Observations on Pieris Protodice Vernalis Edw. in Missouri (Lepid. Pieridæ)

    November Observations on Pieris Protodice Vernalis Edw. in Missouri (Lepid. Pieridæ) by Harold O'Byrne

    Published 1932-01-01
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  2. 2
    A Migratory Flight of Catopsilia Eubule (Lepid.: Pieridæ)

    A Migratory Flight of Catopsilia Eubule (Lepid.: Pieridæ) by Harold O'Byrne

    Published 1933-01-01
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