VOLUME 19 (5)/October 1989

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Vsesoyuzniy Geologicheskiy lnstitut ( VSEGEI), 199026 Leningrad
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens
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lnstitllle for Geology and Mineral Exploration ( lGME), 11527 Athens

Институт земной коры СО АН СССР, 664033 Иркутск
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Институт земной коры СО АН СССР, 664033 Иркутск
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Геологический институт АН СССР, 109017 Москва

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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General Company for Hydraulic Studies, Homs, P. O. Box 752, Syria

Геологический институт, Болгарской академий наук, 1113 София
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Геологический институт, Болгарской академий наук, 1113 София