Classification
005 - Computer programming, programs & data
1,795
331 - Labor economics
1,121
658 - General management
373
374 - Adult education
279
500 - Natural sciences & mathematics
254
000 - Computer science, information & general works
199
004 - Data processing & computer science
177
330 - Economics
174
364 - Criminology
172
620 - Engineering & allied operations
149
384 - Communications; telecommunication
147
338 - Production
104
363 - Other social problems & services
43
006 - Special computer methods
41
368 - Insurance
32
300 - Social sciences
31
600 - Technology
25
302 - Social interaction
24
381 - Commerce
24
745 - Decorative arts
20
670 - Manufacturing
19
332 - Financial economics
16
621 - Applied physics
14
510 - Mathematics
11
570 - Life sciences; biology
10
629 - Other branches of engineering
10
343 - Military, tax, trade & industrial law
9
001 - Knowledge
8
346 - Private law
7
003 - Systems
6
610 - Medicine & health
6
657 - Accounting
6
700 - The arts; fine & decorative arts
6
025 - Library operations
5
333 - Economics of land & energy
5
380 - Commerce, communications & transportation
5
519 - Probabilities & applied mathematics
5
320 - Political science
4
340 - Law
4
158 - Applied psychology
3
303 - Social processes
3
323 - Civil & political rights
3
327 - International relations
3
345 - Criminal law
3
813 - American fiction in English
3
100 - Philosophy & psychology
2
153 - Mental processes & intelligence
2
170 - Ethics
2
200 - Religion
2
305 - Social groups
2
more ...