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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Wilkinson, Roger - Mcleod, Wayne - Langford, Darren - Morris, Paul
    Type: Article
    In: The Avicultural magazine
    Volume: 110
    Issue: 1
    Date: 2004
    Page Range: 20--28
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc