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SDNB
030 General encyclopedic works070 News media, journalismn, publishing200 Religion333.7 Natural resources, energy and environment360 Social services, association500 Natural sciences540 Chemistry & allied sciences630 Agriculture660 Chemical engineering690 Buildings700 The arts796 Athletic & outdoor sports & games891.8 Slavic Literature940 General history of Europe960 General history of Africa990 General history of other areas