Classification
004 - Data processing & computer science
77
005 - Computer programming, programs & data
27
006 - Special computer methods
17
371 - Schools & their activities; special education
13
303 - Social processes
9
025 - Library operations
7
621 - Applied physics
2
658 - General management
2
910 - Geography & travel
2
020 - Library & information sciences
1
300 - Social sciences
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1