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SDNB
000 Generalities, Science060 General organization & museology320 Political science360 Social services, association390 Customs, etiquette, folklore540 Chemistry & allied sciences550 Earth sciences560 Paleontology Paleozoology570 Life science600 Technology (Applied sciences)620 Engineering & allied operations660 Chemical engineering720 Architecture796 Athletic & outdoor sports & games830 Literatures of Germanic languages920 Biography, genealogy, insignia950 General history of Asia Far East