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Institute
SDNB
060 General organization & museology150 Psychology230 Christian theology300 Social sciences320 Political science330 Economics380 Commerce, communications, transport390 Customs, etiquette, folklore400 Language, Linguistics520 Astronomy & allied sciences540 Chemistry & allied sciences560 Paleontology Paleozoology600 Technology (Applied sciences)660 Chemical engineering670 Manufacturing791 Public performances792 Stage presentations891.8 Slavic Literature950 General history of Asia Far East960 General history of Africa