Browsing by Keyword (DDC)

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     380 Commerce, communications and transportation [1]
400 Language [1]
     440 French and related languages [1]
500 Science [2]
     520 Astronomy [1]
     530 Physics [1]
     550 Earth sciences and geology [2]
600 Technology [4]
     620 Engineering [15]
     630 Agriculture [8]
     660 Chemical engineering [1]
     670 Manufacturing [2]
     690 Building and construction [2]
     720 Architecture [3]
     780 Music [1]
         791 Public performances [1]
     820 English and Old English literatures [1]
     830 German and related literatures [1]
     910 Geography and travel [1]
         943 Central Europe; Germany [1]