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  1. By: Gibson, Les
    Type: Article
    In: The Avicultural magazine
    Volume: 107
    Issue: 4
    Date: 2001
    Page Range: 157--165
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc
  2. By: Gibson, Les
    Type: Article
    In: The Avicultural magazine
    Volume: 102
    Issue: 3
    Date: 1996
    Page Range: 124--136
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc
  3. By: Gibson, Les
    Type: Article
    In: The Avicultural magazine
    Volume: 100
    Issue: 2
    Date: 1994
    Page Range: 95--98
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc