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SDNB
000 Generalities, Science020 Library & information sciences150 Psychology230 Christian theology310 General statistics320 Political science330 Economics333.7 Natural resources, energy and environment400 Language, Linguistics460 Spanish & Portugese languages510 Mathematics741.5 Comics Cartoons791 Public performances792 Stage presentations793 Indoor games & amusements800 Literature & rhetoric850 Italian, Romanian, Rhaeto-Romanic literatures860 Spanish & Portuguese literatures910 Geography & travel920 Biography, genealogy, insignia990 General history of other areas