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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Girling, Reuben B.
    Type: Article
    In: The Avicultural magazine
    Volume: 117
    Issue: 2
    Date: 2011
    Page Range: 52--59
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc
  2. By: Girling, Reuben B.
    Type: Article
    In: The Avicultural magazine
    Volume: 119
    Issue: 2
    Date: 2013
    Page Range: 91--92
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc