VOLUME 53 (2)/August 2024

Faculty of Geology and Geography, Department of Geology, Paleontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

Institute of Oceanology, Bulgarian Academy of Sciences, Marine P.O. box 152, 9000 Varna, Bulgaria
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Institute of Oceanology, Bulgarian Academy of Sciences, Marine P.O. box 152, 9000 Varna, Bulgaria
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Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Marmara Research Center, TUBITAK Gebze Campus, Baris Mah. Dr. Zeki Acar Cad. No: 1 P.K. 21, 41470 Gebze Kocaeli, Turkey

Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria