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International study of achievements in mathematics. 2V /
| Main Author: | |
|---|---|
| Language: | Undetermined |
| Published: |
1967.
|
| Series: | International Project for the ecaluation of educational achievement(Hamburg),publication
|
| Main Author: | |
|---|---|
| Language: | Undetermined |
| Published: |
1967.
|
| Series: | International Project for the ecaluation of educational achievement(Hamburg),publication
|