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CLC U-49
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Chinese Library Classification
A Marxism, Leninism, Mao Zedong Thought and Deng Xiaoping Theory
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B Philosophy, Religion
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C General Social Sciences
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D Politics, Law
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E Military
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F Economics
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G Culture, Science, Education, Sports
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H Language, Writing
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I Literature
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J Art
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K History and Geography
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N General Natural Sciences
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O Mathematical Sciences and Chemistry
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P Astronomy and Earth Sciences
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Q Biological Sciences
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R Medicine, Health
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S Agricultural Sciences
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T Industrial Technology
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U Transportation
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V Aviation and Aerospace
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X Environmental Science, Safety Science
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Z General Books
U-* general theory of transportation
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U-40
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U-49
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U-9 transport economy
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U1 Comprehensive Transportation
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U2 Railway Transportation
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U4 Road Transport
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U6 Waterway Transportation
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U8 Aviation Transportation
Subcategories
This category has only the following subcategory.
人
人類的交通
(3 F)
