Zur Entwicklung mathematischer Fähigkeiten /
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| Main Author: | |
|---|---|
| Format: | Book |
| Language: | German Czech |
| Published: |
Berlin :
Volk und Wissen Volkseigener Verlag,
1971.
|
| Series: | Psychologische Beiträge
|
| ISBN: |
(brož.) |
| Physical Description: |
271 s. |
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