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Institute
SDNB
130 Paranormal phenomena300 Social sciences320 Political science333.7 Natural resources, energy and environment335 Military science380 Commerce, communications, transport491.8 Slavic languages520 Astronomy & allied sciences580 Botanical sciences660 Chemical engineering793 Indoor games & amusements860 Spanish & Portuguese literatures900 History970 General history of North America990 General history of other areas