Browsing by Keyword (DDC)

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         004 Data processing and computer science [7]
     150 Psychology [29]
300 Social sciences [14]
     320 Political science [5]
     330 Economics [14]
     370 Education [7]
     380 Commerce, communications and transportation [1]
400 Language [1]
500 Science [9]
     510 Mathematics [6]
     530 Physics [33]
     540 Chemistry [19]
     550 Earth sciences and geology [5]
     570 Life sciences; biology [50]
     580 Plants; biology [15]
     590 Animals; zoology [7]
600 Technology [9]
     610 Medicine and health [2]
     620 Engineering [37]
     630 Agriculture [97]