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SDNB
000 Generalities, Science020 Library & information sciences150 Psychology300 Social sciences310 General statistics460 Spanish & Portugese languages491.8 Slavic languages510 Mathematics540 Chemistry & allied sciences650 Management & auxialiary services660 Chemical engineering760 Graphic arts Printmaking & prints800 Literature & rhetoric830 Literatures of Germanic languages850 Italian, Romanian, Rhaeto-Romanic literatures930 History of the ancient world940 General history of Europe960 General history of Africa