Founded 1934 by Prof. Dr Stefan Bončev
A Geo-Sciences Journal of the Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences
Official Journal of the Carpathian-Balkan Geological Association

Mariana Yossifova

Mariana Yossifova
Geological Institute, Bulgarian Academy of Sciences, “Acad. Georgi Bonchev” Str., Bl. 24, 1113 Sofia, Bulgaria
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Greta Eskenazi
Faculty of Geology and Geography, Sofia University “St. Kl. Ohridski”, Tzar Osvoboditel Str. 15, 1504 Sofia, Bulgaria

On the organic affinity of germanium in peat and coals: аn experimental approach

Volume 55 1 April 2026

Mariana Yossifova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Dimitrina Dimitrova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Milena Vetseva
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Stoyan Georgiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Yana Tzvetanova
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria

Preliminary data on critical element contents in lignite from the Maritsa East basin, Bulgaria

Volume 51 2 August 2022

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

Trace elements in some biomass collected from areas associated with the lignite mining and power producing enterprise Maritsa East, Bulgaria

Volume 42 1-3 December 2013

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