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    Presbyornis and the origin of the Anseriformes (Aves, Charadrimorphae)

    Presbyornis and the origin of the Anseriformes (Aves, Charadrimorphae) by Olson, Storrs L.

    Washington : Smithsonian Institution Press, 1980
    Format: Government Document Book


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  2. 2
    Presbyornis and the origin of the Anseriformes (Aves, Charadriomorphae)

    Presbyornis and the origin of the Anseriformes (Aves, Charadriomorphae) by Olson, Storrs L., Feduccia, Alan

    Washington : Smithsonian Institution Press, 1980
    Format: Government Document Book


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