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2020, Vol.4

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Contents
  1. Petar Stefanov – INTEGRATED MONITORING OF THE SAEVA DUPKA CAVE SYSTEM (“SAEVA DUPKA” SPELEO-MIКS)
  2. Marian Varbanov, Atanas Kitev, Stefan Genchev, Kristina Gartsiyanova – ASSESSMENT OF OXYGEN BALANCE OF WATER IN THE TOPOLNITSA AND LUDA YANA RIVER BASIN
  3. Georgi Zhelezov – DYNAMIC OF WETLAND SYSTEMS IN ARCHARO-ORSOYSKA LOWLAND
  4. Georgi Zhelezov, Aleksey Benderev, Sava Kolev, Kostadin Nikolov – RELATIONSHIP OF THE SPATIAL DISTRIBUTION OF HEAVY METALS IN THE SOIL WITH THE MORPHOLOGY OF CONTAMINATED RIVER FLOODPLAINS (TOPOMET)
National Institute of Geophysics, Geodesy and Geography - Bulgarian Academy of Sciences
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