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| [ñáîðíèê] |
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| | Íàöèîíàëíà ó÷èëèùíà êîíôåðåíöèÿ `Ñïîäåëåíè ïåäàãîãè÷åñêè ïðàêòèêè â ïðåïîäàâàíåòî íà ïðèðîäíè íàóêè` | ÐÀ6182 |
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| Ñîôèÿ |
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| 20 ñì |
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| 2019- |
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| ãîäèøíèê |
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ISSN: | 2683-0744 |
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| 5 |
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Older Receipts (by Years): | | 2019 |
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