School organization and school achievement : a study based on achievement in mathematics in twelve countries /
Збережено в:
Автор: | |
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Формат: | Книга |
Мова: | English |
Опубліковано: |
New York :
Wiley,
1967.
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Предмети: |
Зміст:
- Data "collected by the International Project for the Evaluation of Educational Achievement (IEA)".