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  1. By: Portis, Alessandro,
    Publication info: Torino, E. Loescher, 1885
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Portis, Alessandro,
    Publication info: Torino, [s.n.], 1879
    Holding Institution: University Library, University of Illinois Urbana Champaign
  3. By: Portis, Alessandro,
    Publication info: Firenze, Coi Tipi dei Successori le Monnier, 1890
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  1. By: Portis, Alessandro,
    Type: Article
    In: Memorie della Reale accademia delle scienze di Torino
    Volume: 37
    Series: 2
    Date: 1886
    Page Range: 247--365
    Publication Info: Torino, Stamperia reale, 1818-1942