The psychology of number and its applications to methods of teaching arithmetic QA135 .M1.
| Autors principals: | , |
|---|---|
| Format: | Llibre |
| Idioma: | English |
| Publicat: |
New York
D. Appleton
1895.
|
| Autors principals: | , |
|---|---|
| Format: | Llibre |
| Idioma: | English |
| Publicat: |
New York
D. Appleton
1895.
|