Practical Arithmetic: Uniting the Inductive with the Synthetic Mode of Instruction, for Schools and Academies Ivison, Phinney & Company, 1863 - 384 σελίδες |
Practical Arithmetic: Uniting the Inductive with the Synthetic Mode of Instruction, for Schools and AcademiesIvison, Phinney & Company, 1863 - 384 σελίδες |