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  1. By: Erritzoe, Johannes
    Type: Article
    In: The Avicultural magazine
    Volume: 104
    Issue: 1
    Date: 1998
    Page Range: 27--38
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc
  2. By: Erritzoe, Johannes
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 114
    Date: 1994
    Page Range: 128--128
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Erritzoe, Johannes
    Type: Article
    In: Nemouria; occasional papers of the Delaware Museum of Natural History
    Volume: 40
    Date: 1995
    Page Range: 1--15
    Publication Info: [Greenville], Delaware Museum of Natural History,