Petar Milovanov

Geology and Geophysics Research Institute, 1505 Sofia, Bulgaria, 23 Sitnyakovo blvd
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Bulgarian Academy of science, Geological Institute, 1113 Sofia, Bulgaria, 24 g. Bonchev str.
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Sofia University “St. KlimentOhridski”, 1504 Sofia, Bulgaria, 15 Tsar Osvoboditel blvd
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University of Mining andGgeology “St. Ivan Rilski”, Sofia, Bulgaria, Student city, Hristo Botev str.
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Bulgarian Academy of science, Geological Institute, 1113 Sofia, Bulgaria, 24 g. Bonchev str.; IGP, ETH-Zurich, Switzerland
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IGP, ETH-Zurich, Switzerland
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University of Mining andGgeology “St. Ivan Rilski”, Sofia, Bulgaria, Student city, Hristo Botev str.

Volume 39 1-2 September 2010