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  1. By: Vrolik, W. (Willem),
    Publication info: 1851
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  2. By: Universiteit van Amsterdam. Anatomisch instituut en Museum Vrolik. - Vrolik, Gerardus, - Vrolik, W. (Willem), - Dusseau, Justus Lodewijk,
    Publication info: Amsterdam, Impr. de W. J. de Roever Kröber, 1865
    Holding Institution: Smithsonian Libraries and Archives
  3. By: Vrolik, W. (Willem), - Veelwaard, Daniel,
    Publication info: Amsterdam, Bij P. Meyer Warnars, 1827
    Holding Institution: Multiple institutions
  1. By: Vrolik, W. (Willem),
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 12
    Date: 1843
    Page Range: 173--175
    Publication Info: London Taylor and Francis, Ltd