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  1. By: Norman, Alfred Merle,
    Publication info: S.l : s.n 1900?
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Amphipoda  Great Britain  Stegocephali  
  2. By: Burmeister, Hermann,
    Publication info: Berlin, G. Reimer, 1849-50
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Germany  Labyrinthodontia  Paleontology  Stegocephali