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SDNB
000 Generalities, Science050 General serials & their indexes070 News media, journalismn, publishing320 Political science439 Other Germanic languages540 Chemistry & allied sciences570 Life science621.3 Electrical Engineering, Electronics640 Home economics & family living690 Buildings750 Painting & paintings780 Music860 Spanish & Portuguese literatures960 General history of Africa990 General history of other areas