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  1. XXX.—On the Zoological condition of Chalk Flints, and the probable causes of the Deposit of Flinty Strata alternating with the Upper Beds of the Cretaceous Formation
    By: Ansted, D T
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 13
    Date: 1844
    Page Range: 241--249
    Publication info: London,Taylor and Francis, Ltd.
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