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SDNB
004 Data processing Computer sciences020 Library & information sciences300 Social sciences480 Hellenic languages Classical Greek520 Astronomy & allied sciences530 Physics540 Chemistry & allied sciences570 Life science624 Structural and Environmental Engineering630 Agriculture660 Chemical engineering790 Recreational & performing arts830 Literatures of Germanic languages900 History910 Geography & travel940 General history of Europe943 General history of Europe Central Europe Germany