Foundations of Elementary School Arithmetic Henry Van Engen Maurice L. Hartung James E. Stochl
| Autor: | Beers, George S. |
|---|---|
| Zdroj: | The Mathematics Teacher, 1967 Nov 01. 60(7), 788-789. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
|
| Autor: | Beers, George S. |
|---|---|
| Zdroj: | The Mathematics Teacher, 1967 Nov 01. 60(7), 788-789. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
|