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  1. By: Schultes, Richard Evans,
    Holding Institution: Harvard University Botany Libraries
    Subjects: Colombia  Piraparaná River Region  Plants  Schultes, Richard Evans  Travel  
  2. By: Schultes, Richard Evans,
    Holding Institution: Harvard University Botany Libraries
    Subjects: Colombia  Piraparaná River Region  Plant names, Popular  Plants  Rubber