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  1. Johannes Müller on certain variations in the vocal organs of the Passeres that have hitherto escaped notice. The translation by F. Jeffrey Bell, edited, with and appendix by A.H. Garrod [with the 8 plates of the original work]
    By: Müller, Johannes, - Garrod, A. H.
    Publication info: Oxford,Clarendon Press,1878.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Institution Libraries
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