Browsing by Keyword (DDC)

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         004 Data processing and computer science [6]
     150 Psychology [28]
300 Social sciences [11]
     320 Political science [4]
     330 Economics [14]
     370 Education [6]
     380 Commerce, communications and transportation [1]
400 Language [1]
500 Science [8]
     510 Mathematics [6]
     530 Physics [31]
     540 Chemistry [16]
     550 Earth sciences and geology [3]
     570 Life sciences; biology [47]
     580 Plants; biology [12]
     590 Animals; zoology [5]
600 Technology [5]
     610 Medicine and health [2]
     620 Engineering [35]
     630 Agriculture [95]