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1 (1133) | Sofia University | BGR | ![]() | |
2 (2005) | Technical University of Sofia | BGR | ![]() | |
3 (2984) | Bulgarian Academy of Sciences | BGR | ![]() | |
3 (2984) | Medical University of Sofia | BGR | ![]() | |
3 (2984) | University of Chemical Technology and Metallurgy | BGR | ![]() |