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SDNB
333.7 Natural resources, energy and environment370 Education450 Italian, Romanian, Rhaeto-Romanic480 Hellenic languages Classical Greek590 Zoological sciences620 Engineering & allied operations621.3 Electrical Engineering, Electronics630 Agriculture650 Management & auxialiary services760 Graphic arts Printmaking & prints790 Recreational & performing arts800 Literature & rhetoric891.8 Slavic Literature920 Biography, genealogy, insignia930 History of the ancient world