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| Îôèöèàëåí áþëåòèí. Áúëãàðñêè èíñòèòóò çà ñòàíäàðòèçàöèÿ | ÐÅ22 |
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| |
| Ñîôèÿ |
| 12 ñì |
| 2017- |
| ìåñå÷íèê |
ISSN: | 2534-9740 |
| 006 |
| |
| |
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| | Older Receipts (by Years): | 2023; 2022; 2021 |
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