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  1. By: Elliot, Daniel Giraud,
    Publication info: [London], Published for the subscribers by the author [printed by Taylor and Francis], 1882
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Birds  Hornbills  Pictorial works  
  1. By: Guerra, Shari - Gonzalez, Juan Carlos - Rafael, Emmanuel Francisco
    Type: Article
    In: Biodiversity data journal
    Volume: 7
    Date: 2019-11-13
    Page Range: 1--2
    Publication Info: Sofia Pensoft Publishers [2013]-
    Subjects: bioacoustics  Hornbills  species limits  Vocalisation