New Elementary Arithmetic: Embracing Mental and Written Exercises for Beginners : Prepared to Accompany the Mathematical Series of Benjamin Greenleaf, A.M. Robert S. Davis & Company, 1882 - 224 σελίδες |
New Elementary Arithmetic: Embracing Mental and Written Exercises for Beginners : Prepared to Accompany the Mathematical Series of Benjamin Greenleaf, A.M.Robert S. Davis & Company, 1882 - 224 σελίδες |