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  1. The application of syringeal morphology to the classification of the Old World lnsect Eeaters (Muscicapidae)
    By: Ames, P L
    Type: Article
    In: Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn.
    Volume: 26
    Date: 1975
    Page Range: 107--134
    Publication info: Bonn :Das Forschungsinstitut
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  2. Variation in the sternal notches of suboscine passeriform birds
    By: Hehnerdinger, M A - Ames, P L
    Type: Article
    In: Postilla.
    Volume: 105
    Date: 1967
    Page Range: 1--44
    Publication info: New Haven, Conn. :Peabody Museum of Natural History,[1950?]-c2004.
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