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SDNB
000 Generalities, Science060 General organization & museology330 Economics360 Social services, association370 Education460 Spanish & Portugese languages500 Natural sciences520 Astronomy & allied sciences610 Medical sciences Medicine640 Home economics & family living792 Stage presentations793 Indoor games & amusements860 Spanish & Portuguese literatures891.8 Slavic Literature910 Geography & travel930 History of the ancient world