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Institute
SDNB
130 Paranormal phenomena300 Social sciences320 Political science333.7 Natural resources, energy and environment380 Commerce, communications, transport491.8 Slavic languages520 Astronomy & allied sciences580 Botanical sciences624 Structural and Environmental Engineering660 Chemical engineering793 Indoor games & amusements860 Spanish & Portuguese literatures900 History910 Geography & travel920 Biography, genealogy, insignia990 General history of other areas