Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is Combined with the Use of the Slate, Containing a Complete System for All Practical Purposes, Being in Dollars and CentsJ.B. Lippincott & Company, 1858 - 282 σελίδες |
Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is Combined with the Use of the Slate, Containing a Complete System for All Practical Purposes, Being in Dollars and CentsJ.B. Lippincott & Company, 1858 - 282 σελίδες |