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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Shearer, Cresswell - De Morgan, Walter Campbell, - Fuchs, H M
    Type: Article
    In: Quarterly journal of microscopical science
    Volume: 58
    Series: 2
    Date: 1912-12-01
    Page Range: 337--352
    Publication Info: London J. and A. Churchill [etc.]