Alexandra Harkovska

Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl. 24, 1113 Sofia, Bulgaria
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ATOMKI, Hungarian Academy of Sciences, Bem ter 18/c, H-4001, Debrecen, Hungary
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl. 24, 1113 Sofia, Bulgaria

Volume 34 3-4 December 2004

Institute of Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Bem ter 18/c, H-4001, Debrecen, Hungary
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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 30 1-2 June 2000

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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ATOMKI - Hungarian Academy of Sciences, Debrecen, Hungary
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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 28 1-2 August 1998

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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Volume 25 1 February 1995

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

Volume 23 1 February 1993

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

Volume 22 2 April 1992

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

Volume 22 1 February 1992

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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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria
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Sofia University "St. Kliment Ohridski" 15 Tsar Osvoboditel Blvd., 1504 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 21 4 August 1991

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

Volume 20 4 August 1990

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 19 1 February 1989