School organization and school achievement : a study based on achievement in mathematics in twelve countries /
Wedi'i Gadw mewn:
Prif Awdur: | |
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Fformat: | Llyfr |
Iaith: | English |
Cyhoeddwyd: |
New York :
Wiley,
1967.
|
Pynciau: |
Tabl Cynhwysion:
- Data "collected by the International Project for the Evaluation of Educational Achievement (IEA)".