Intellectual development and school achievement of youths 12-17 years : demographic and socio-economic factors /
Guardado en:
| Autor principal: | |
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| Formato: | Libro |
| Lenguaje: | Inglés |
| Publicado: |
Washington :
U.S. Department of Health, Education, and Welfare,
1976.
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| Materias: |
| Descripción Física: | iii, 65 p. |
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