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SDNB
200 Religion320 Political science335 Military science380 Commerce, communications, transport390 Customs, etiquette, folklore460 Spanish & Portugese languages500 Natural sciences510 Mathematics600 Technology (Applied sciences)610 Medical sciences Medicine720 Architecture793 Indoor games & amusements800 Literature & rhetoric830 Literatures of Germanic languages870 Italic literatures Latin920 Biography, genealogy, insignia990 General history of other areas