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  1. By: Berg, Bengt Magnus Kristoffer,
    Publication info: Stockholm, P.A. Norstedt & s, [1922]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.82(6)  Cranes (Birds)  
  2. By: Amadon, Dean
    Publication info: New York, American Museum of Natural History, [1954]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.82(6)  Africa  Birds  Classification  Hirundo aethiopica fulvipectus  Motacilla clara chapini  Riparia cincta parvula