Classification
003 - Systems
005 - Computer programming, programs & data
30
658 - General management
5
006 - Special computer methods
4
500 - Natural sciences & mathematics
4
629 - Other branches of engineering
4
302 - Social interaction
3
620 - Engineering & allied operations
3
153 - Mental processes & intelligence
1
335 - Socialism & related systems
1
342 - Constitutional & administrative law
1
670 - Manufacturing
1
745 - Decorative arts
1