LIBROS DEL AUTOR: frederick j edwards

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  • Rules For The Mental Calculator
    Frederick J. Edwards / Frederick JEdwards
    Rules For The Mental Calculator: With Specimen Examination Papers (1882) is a book written by Frederick J. Edwards. The book is a comprehensive guide for mental calculation, providing readers with rules and techniques to perform calculations mentally. The book includes a series of specimen examination papers, which serve as practice tests for readers to test their mental calcul...
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