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SDNB
004 Data processing Computer sciences300 Social sciences330 Economics333.7 Natural resources, energy and environment420 English439 Other Germanic languages440 Romance languages French491.8 Slavic languages550 Earth sciences630 Agriculture750 Painting & paintings800 Literature & rhetoric891.8 Slavic Literature914.3 Geography & travel Germany920 Biography, genealogy, insignia930 History of the ancient world950 General history of Asia Far East960 General history of Africa970 General history of North America