Browsing by Keyword (DDC)

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         004 Data processing and computer science [2]
     150 Psychology [20]
300 Social sciences [2]
     320 Political science [1]
     330 Economics [4]
     370 Education [2]
     380 Commerce, communications and transportation [1]
500 Science [6]
     510 Mathematics [3]
     530 Physics [27]
     540 Chemistry [12]
     570 Life sciences; biology [37]
     580 Plants; biology [6]
     590 Animals; zoology [2]
     620 Engineering [22]
     630 Agriculture [75]
     710 Landscaping and area planning [2]
         796 Athletic and outdoor sports and games [6]