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SDNB
050 General serials & their indexes070 News media, journalismn, publishing200 Religion300 Social sciences330 Economics335 Military science390 Customs, etiquette, folklore450 Italian, Romanian, Rhaeto-Romanic490 Other languages500 Natural sciences510 Mathematics590 Zoological sciences620 Engineering & allied operations621.3 Electrical Engineering, Electronics870 Italic literatures Latin