Classification
500 - Natural sciences & mathematics
005 - Computer programming, programs & data
260
620 - Engineering & allied operations
140
384 - Communications; telecommunication
34
000 - Computer science, information & general works
32
331 - Labor economics
22
004 - Data processing & computer science
16
006 - Special computer methods
15
658 - General management
15
374 - Adult education
10
330 - Economics
6
745 - Decorative arts
5
338 - Production
2
794 - Indoor games of skill
2
001 - Knowledge
1
051 - Serials in American English
1
302 - Social interaction
1
629 - Other branches of engineering
1