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  1. By: Hitchcock, A. S. (Albert Spear),
    Publication info: 1919-1920
    Holding Institution: Smithsonian Institution Archives
    Subjects: Botany  Demerara  Essequibo  Field notes  Georgetown  Guyana  Potaro  
    BHL Collections: Smithsonian Field Books collection
  2. By: Meyer, G. F. W. (Georg Friedrich Wilhelm),
    Publication info: Gottingae, Sumptibus H. Dieterich, 1818
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Botany  Essequibo  Guyana  
  1. By: Taphorn, Donald C. (Donald Charles), - Armbruster, Jonathan W. - López-Fernández, Hernán - Bernard, Calvin R.
    Type: Article
    In: Neotropical Ichthyology
    Date: 2010-01-01
    Subjects: endemism  Essequibo  Guiana Shield  Isolation  Punk Catfish