= пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ - пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ - пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ 72 13 72
| [книга] |
| Оптимизация обучения физике и астрономии |
| |
| Москва : Просвещение |
| 1989 |
ISBN: | 5-09-001321-7 |
| |
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Bulgarian version
 
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