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SDNB
004 Data processing Computer sciences310 General statistics360 Social services, association380 Commerce, communications, transport400 Language, Linguistics500 Natural sciences510 Mathematics560 Paleontology Paleozoology620 Engineering & allied operations621.3 Electrical Engineering, Electronics630 Agriculture640 Home economics & family living670 Manufacturing800 Literature & rhetoric860 Spanish & Portuguese literatures943 General history of Europe Central Europe Germany