Classification
005 - Computer programming, programs & data
500 - Natural sciences & mathematics
2,565
331 - Labor economics
2,372
658 - General management
2,090
620 - Engineering & allied operations
1,817
745 - Decorative arts
885
330 - Economics
769
374 - Adult education
698
384 - Communications; telecommunication
516
381 - Commerce
142
338 - Production
141
600 - Technology
104
364 - Criminology
99
519 - Probabilities & applied mathematics
85
302 - Social interaction
84
332 - Financial economics
75
510 - Mathematics
71
300 - Social sciences
61
650 - Management & auxiliary services
46
004 - Data processing & computer science
40
006 - Special computer methods
31
153 - Mental processes & intelligence
28
001 - Knowledge
27
670 - Manufacturing
23
011 - Bibliographies
20
368 - Insurance
18
700 - The arts; fine & decorative arts
18
380 - Commerce, communications & transportation
14
621 - Applied physics
11
158 - Applied psychology
9
629 - Other branches of engineering
5
371 - Schools & their activities; special education
3
651 - Office services
3
770 - Photography, photographs & computer art
3
800 - Literature & rhetoric
3
659 - Advertising & public relations
2
740 - Drawing & decorative arts
2
741 - Drawing & drawings
2
781 - General principles & musical forms
2
003 - Systems
1
025 - Library operations
1
301 - Sociology & anthropology
1
363 - Other social problems & services
1
686 - Printing & related activities
1
794 - Indoor games of skill
1
808 - Rhetoric & collections of literature
1