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SDNB
004 Data processing Computer sciences070 News media, journalismn, publishing300 Social sciences330 Economics370 Education390 Customs, etiquette, folklore420 English460 Spanish & Portugese languages530 Physics570 Life science621.3 Electrical Engineering, Electronics741.5 Comics Cartoons810 American literature in English920 Biography, genealogy, insignia940 General history of Europe950 General history of Asia Far East