Александра Харковска

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