Classification
005 - Computer programming, programs & data
103
000 - Computer science, information & general works
21
500 - Natural sciences & mathematics
20
620 - Engineering & allied operations
16
331 - Labor economics
10
004 - Data processing & computer science
7
384 - Communications; telecommunication
4
658 - General management
4
600 - Technology
3
652 - Processes of written communication
3
070 - News media, journalism & publishing
1
300 - Social sciences
1
330 - Economics
1
363 - Other social problems & services
1
364 - Criminology
1
808 - Rhetoric & collections of literature
1