Classification
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353 - Specific fields of public administration
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
418 - Standard usage & applied linguistics
1
500 - Natural sciences & mathematics
1
509 - Historical, geographic & persons treatment
1
510 - Mathematics
1
530 - Physics
1
600 - Technology
1
709 - Historical, geographic & persons treatment
1
720 - Architecture
1
780 - Music
1
791 - Public performances
1
801 - Philosophy & theory
1
910 - Geography & travel
1
911 - Historical geography
1