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4
Serial [CD]
Îôèöèàëåí áþëåòèí. Áúëãàðñêè èíñòèòóò çà ñòàíäàðòèçàöèÿ
Áúëãàðñêè èíñòèòóò çà ñòàíäàðòèçàöèÿ
Ñîôèÿ
2017-
ìåñå÷íèê
ISSN:
2534-9740
Ñòàíäàðòèçàöèÿ
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5-12
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2021
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