Elena Stancheva

Department of Mineralogy, Petrology and Economic Geology, University of Sofia, 1504, 15 Tz. Osvoboditel Blv, Sofia, Bulgaria
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Department of Mineralogy, Petrology and Economic Geology, University of Sofia, 1504, 15 Tz. Osvoboditel Blv, Sofia, Bulgaria
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Department of Mineralogy, Petrology and Economic Geology, University of Sofia, 1504, 15 Tz. Osvoboditel Blv, Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113, Acad. G. Bontchev St, Bl. 24, Sofia, Bulgaria

Volume 39 1-2 September 2010

Sofia University “St. Kliment Ohridski”, 1504 Sofia; Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Sofia University “St. Kliment Ohridski”, 1504 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Sofia University “St. Kliment Ohridski”, 1504 Sofia

Volume 37 1-2 June 2008

Sofia University “St. Kliment Ohridski”, 1504 Sofia; Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Research Institute “Geology and Geophysics” Corporation, 1505 Sofia

Volume 37 1-2 June 2008

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Volume 23 4 August 1993

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Volume 20 1 February 1990