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SDNB
004 Data processing Computer sciences060 General organization & museology070 News media, journalismn, publishing200 Religion230 Christian theology310 General statistics420 English439 Other Germanic languages450 Italian, Romanian, Rhaeto-Romanic490 Other languages550 Earth sciences560 Paleontology Paleozoology610 Medical sciences Medicine620 Engineering & allied operations621.3 Electrical Engineering, Electronics624 Structural and Environmental Engineering640 Home economics & family living650 Management & auxialiary services670 Manufacturing741.5 Comics Cartoons800 Literature & rhetoric820 English & Old English literatures880 Hellenic literatures Classical Greek