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  1. By: Rosen, Donn Eric, - Kallman, Klaus D.
    Publication info: New York, N.Y American Museum of Natural History [1969]
    Holding Institution: American Museum of Natural History Library
    Subjects: Alta Verapaz  Central America  Classification  Fishes  Guatemala  Mexico  Xiphophorus  Xiphophorus helleri signum
  2. By: Rosen, Donn Eric,
    Publication info: New York, N.Y, American Museum of Natural History, [1970]
    Holding Institution: American Museum of Natural History Library
    Subjects: Alta Verapaz  Bramocharax bransfordi dorioni  Classification  Fishes  Guatemala  
  3. By: Rosen, Donn Eric, - Bailey, Reeve M. (Reeve Maclaren)
    Publication info: New York, N.Y, American Museum of Natural History, [1972]
    Holding Institution: American Museum of Natural History Library
    Subjects: Alta Verapaz  Bramocharax  Bramocharax baileyi  Central America  Classification  Dispersal  Fishes  Guatemala  Origin  Phylogeny