Classification
005 - Computer programming, programs & data
3,458
658 - General management
1,862
006 - Special computer methods
1,030
004 - Data processing & computer science
864
500 - Natural sciences & mathematics
549
000 - Computer science, information & general works
497
330 - Economics
419
745 - Decorative arts
314
620 - Engineering & allied operations
277
003 - Systems
247
025 - Library operations
218
331 - Labor economics
149
610 - Medicine & health
114
332 - Financial economics
109
600 - Technology
85
700 - The arts; fine & decorative arts
80
338 - Production
79
621 - Applied physics
79
384 - Communications; telecommunication
71
381 - Commerce
65
333 - Economics of land & energy
62
374 - Adult education
59
519 - Probabilities & applied mathematics
52
300 - Social sciences
48
570 - Life sciences; biology
46
900 - History & geography
40
363 - Other social problems & services
37
510 - Mathematics
35
302 - Social interaction
34
380 - Commerce, communications & transportation
33
580 - Plants (Botany)
33
140 - Specific philosophical schools
30
670 - Manufacturing
26
518 - Numerical analysis
25
650 - Management & auxiliary services
24
001 - Knowledge
23
540 - Chemistry & allied sciences
22
910 - Geography & travel
18
320 - Political science
17
576 - Genetics & evolution
16
530 - Physics
15
572 - Biochemistry
14
551 - Geology, hydrology & meteorology
13
615 - Pharmacology & therapeutics
12
153 - Mental processes & intelligence
11
400 - Language
11
020 - Library & information sciences
10
303 - Social processes
10
304 - Factors affecting social behavior
10
370 - Education
9
more ...