Classification
005 - Computer programming, programs & data
3,366
658 - General management
1,798
006 - Special computer methods
1,002
004 - Data processing & computer science
857
500 - Natural sciences & mathematics
537
000 - Computer science, information & general works
498
745 - Decorative arts
306
620 - Engineering & allied operations
272
330 - Economics
255
003 - Systems
241
025 - Library operations
217
331 - Labor economics
147
610 - Medicine & health
116
332 - Financial economics
103
600 - Technology
89
700 - The arts; fine & decorative arts
78
338 - Production
76
621 - Applied physics
71
384 - Communications; telecommunication
69
381 - Commerce
64
333 - Economics of land & energy
61
374 - Adult education
58
519 - Probabilities & applied mathematics
50
300 - Social sciences
46
570 - Life sciences; biology
45
900 - History & geography
38
363 - Other social problems & services
36
510 - Mathematics
35
302 - Social interaction
34
580 - Plants (Botany)
33
380 - Commerce, communications & transportation
32
140 - Specific philosophical schools
28
518 - Numerical analysis
25
650 - Management & auxiliary services
24
670 - Manufacturing
24
001 - Knowledge
22
540 - Chemistry & allied sciences
19
320 - Political science
17
910 - Geography & travel
17
576 - Genetics & evolution
16
530 - Physics
14
572 - Biochemistry
14
551 - Geology, hydrology & meteorology
13
615 - Pharmacology & therapeutics
12
020 - Library & information sciences
10
400 - Language
10
303 - Social processes
9
304 - Factors affecting social behavior
9
153 - Mental processes & intelligence
8
370 - Education
8
more ...