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Ôèçèêî-ìàòåìàòè÷åñêî ñïèñàíèå [ñïèñàíèå:äðóãà] : Îðãàí íà Ìèíèñòåðñòâîòî íà íàðîäíàòà ïðîñâåòà / Ðåä. êîëåãèÿ
- Ãîä. 1, N 1-3 (1952/1953). - Ñîôèÿ : Íàðîäíà ïðîñâåòà, 1952/1953. - 23 ñì
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ÓÄÊ 53+51
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