Classification
331 - Labor economics
000 - Computer science, information & general works
139
500 - Natural sciences & mathematics
75
620 - Engineering & allied operations
73
658 - General management
70
384 - Communications; telecommunication
51
004 - Data processing & computer science
42
330 - Economics
32
005 - Computer programming, programs & data
26
338 - Production
21
621 - Applied physics
5
153 - Mental processes & intelligence
2
670 - Manufacturing
2
006 - Special computer methods
1
363 - Other social problems & services
1
381 - Commerce
1
745 - Decorative arts
1