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  1. By: Olmos, F - Rodrigues, Marcos
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 110
    Date: 1990
    Page Range: 203--205
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Olmos, F
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 110
    Date: 1990
    Page Range: 225--226
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Silva, R S E - Olmos, F
    Type: Article
    In: The journal of raptor research
    Volume: 36
    Issue: 4
    Date: 2002
    Page Range: 328--331
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-