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  1. By: Esterly, Calvin Olin,
    Publication info: Berkeley, The University press, 1904
    Holding Institution: University of California Libraries
    Subjects: Plethodon  Poison glands  
  2. By: Highton, Richard. - Maha, George C. - Maxson, Linda R.
    Publication info: Urbana, University of Illinois Press, 1989
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Amphibians  Evolution  Molecular evolution  Plethodon  Slimy salamander  United States