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JOURNAL OF ENVIRONMENTAL PROTECTION AND ECOLOGY (12 мес)
Абонамент 2019. Периодични и специализирани издания.
↗ https://abo.cent.bg/product/special/journal-of-environmental-protection-and-ecology-12-%d0%bc%d0%b5%d1%81/Абонамент 2019. Периодични и специализирани издания.
↗ https://abo.cent.bg/product/special/journal-of-environmental-protection-and-ecology-12-%d0%bc%d0%b5%d1%81/