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SDNB
060 General organization & museology070 News media, journalismn, publishing310 General statistics330 Economics335 Military science380 Commerce, communications, transport390 Customs, etiquette, folklore430 Germanic460 Spanish & Portugese languages510 Mathematics670 Manufacturing710 Civic & landscape art740 Drawing & decorative arts770 Photography & photographs791 Public performances820 English & Old English literatures850 Italian, Romanian, Rhaeto-Romanic literatures910 Geography & travel