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SDNB
004 Data processing Computer sciences050 General serials & their indexes060 General organization & museology070 News media, journalismn, publishing333.7 Natural resources, energy and environment370 Education460 Spanish & Portugese languages540 Chemistry & allied sciences550 Earth sciences621.3 Electrical Engineering, Electronics690 Buildings791 Public performances800 Literature & rhetoric839 Other Germanic literatures914.3 Geography & travel Germany970 General history of North America