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ISSN: 2367-7791
Publisher: Varna Варна : Znanie i biznes Знание и бизнес, 2015-2022 2015-2022
Country: Bulgaria
URL: eknigibg.net/index.php?ro ...
Status: Confirmed
Dates: 2015-2022
ISSN: 2603-3577
Publisher: Plovdiv Пловдив : PU Paisij Hilendarski ПУ Паисий Хилендарски, 2018- 2018-
Country: Bulgaria
URL: www.eddev.eu
Status: Confirmed
Dates: 2018-9999