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SDNB
000 Generalities, Science070 News media, journalismn, publishing130 Paranormal phenomena200 Religion310 General statistics333.7 Natural resources, energy and environment400 Language, Linguistics460 Spanish & Portugese languages520 Astronomy & allied sciences580 Botanical sciences660 Chemical engineering710 Civic & landscape art770 Photography & photographs793 Indoor games & amusements860 Spanish & Portuguese literatures890 Literatures of other languages900 History930 History of the ancient world