Browsing by Keyword (DDC)

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         004 Data processing and computer science [8]
     150 Psychology [34]
300 Social sciences [27]
     320 Political science [7]
     330 Economics [17]
     370 Education [9]
     380 Commerce, communications and transportation [1]
400 Language [1]
500 Science [10]
     510 Mathematics [10]
     530 Physics [42]
     540 Chemistry [21]
     550 Earth sciences and geology [10]
     570 Life sciences; biology [56]
     580 Plants; biology [21]
     590 Animals; zoology [9]
600 Technology [16]
     610 Medicine and health [2]
     620 Engineering [48]
     630 Agriculture [102]