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SDNB
020 Library & information sciences070 News media, journalismn, publishing310 General statistics333.7 Natural resources, energy and environment400 Language, Linguistics500 Natural sciences510 Mathematics540 Chemistry & allied sciences560 Paleontology Paleozoology580 Botanical sciences600 Technology (Applied sciences)621.3 Electrical Engineering, Electronics670 Manufacturing690 Buildings791 Public performances792 Stage presentations891.8 Slavic Literature930 History of the ancient world943 General history of Europe Central Europe Germany