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SDNB
000 Generalities, Science030 General encyclopedic works060 General organization & museology070 News media, journalismn, publishing130 Paranormal phenomena333.7 Natural resources, energy and environment370 Education520 Astronomy & allied sciences570 Life science580 Botanical sciences660 Chemical engineering700 The arts720 Architecture780 Music860 Spanish & Portuguese literatures880 Hellenic literatures Classical Greek920 Biography, genealogy, insignia960 General history of Africa990 General history of other areas