Classification
004 - Data processing & computer science
712
005 - Computer programming, programs & data
338
006 - Special computer methods
146
621 - Applied physics
62
003 - Systems
29
518 - Numerical analysis
14
570 - Life sciences; biology
8
610 - Medicine & health
7
303 - Social processes
6
658 - General management
5
025 - Library operations
4
511 - General principles of mathematics
3
519 - Probabilities & applied mathematics
3
629 - Other branches of engineering
3
371 - Schools & their activities; special education
2
670 - Manufacturing
2
020 - Library & information sciences
1
323 - Civil & political rights
1
338 - Production
1
374 - Adult education
1
400 - Language
1
500 - Natural sciences & mathematics
1
510 - Mathematics
1
534 - Sound & related vibrations
1
620 - Engineering & allied operations
1
657 - Accounting
1
745 - Decorative arts
1
794 - Indoor games of skill
1
808 - Rhetoric & collections of literature
1