A study of the possibilities of graphs as a means of instruction in the first four grades of the elementary school
| Autor Principal: | |
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| Formato: | Libro |
| Datos de publicación: |
New York :
Columbia University,
1938.
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| Acceso en línea: | Consultar en el Cátalogo |
| Descripción Física: | 173 p. ; 21 cm. |