The National Arithmetic on the Inductive System: Combining the Analytic and Synthetic Methods, Together with the Cancelling System, Forming a Complete Mercantile Arithmetic Robert S. Davis, 1856 - 360 σελίδες |
The National Arithmetic on the Inductive System: Combining the Analytic and Synthetic Methods, Together with the Cancelling System, Forming a Complete Mercantile ArithmeticRobert S. Davis, 1856 - 360 σελίδες |