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    How high can a dinosaur count? : and other math mysteries by Fisher, Valorie

    Published 2006
    Book
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    California mathematics : concepts, skills, and problem solving. [Grade] 1

    Published 2009
    Book
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    The foundations of arithmetic : a logico-mathematical enquiry into the concept of number by Frege, Gottlob, 1848-1925

    Published 1968
    Book
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