Classification
006 - Special computer methods
571
005 - Computer programming, programs & data
127
004 - Data processing & computer science
14
500 - Natural sciences & mathematics
12
620 - Engineering & allied operations
7
794 - Indoor games of skill
7
658 - General management
6
621 - Applied physics
3
384 - Communications; telecommunication
2
745 - Decorative arts
2
000 - Computer science, information & general works
1
025 - Library operations
1
300 - Social sciences
1
302 - Social interaction
1
303 - Social processes
1
330 - Economics
1
331 - Labor economics
1
371 - Schools & their activities; special education
1
381 - Commerce
1
600 - Technology
1
670 - Manufacturing
1