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SDNB
333.7 Natural resources, energy and environment350 Public administration370 Education500 Natural sciences520 Astronomy & allied sciences540 Chemistry & allied sciences570 Life science580 Botanical sciences624 Structural and Environmental Engineering839 Other Germanic literatures880 Hellenic literatures Classical Greek891.8 Slavic Literature910 Geography & travel943 General history of Europe Central Europe Germany960 General history of Africa