Classification
005 - Computer programming, programs & data
308
658 - General management
135
500 - Natural sciences & mathematics
102
330 - Economics
100
620 - Engineering & allied operations
91
004 - Data processing & computer science
43
000 - Computer science, information & general works
41
331 - Labor economics
40
374 - Adult education
32
381 - Commerce
25
384 - Communications; telecommunication
24
650 - Management & auxiliary services
24
006 - Special computer methods
13
300 - Social sciences
10
745 - Decorative arts
8
001 - Knowledge
5
338 - Production
5
621 - Applied physics
5
302 - Social interaction
4
651 - Office services
4
153 - Mental processes & intelligence
3
158 - Applied psychology
3
332 - Financial economics
3
340 - Law
3
519 - Probabilities & applied mathematics
3
003 - Systems
2
417 - Dialectology & historical linguistics
2
502 - Miscellany
2
670 - Manufacturing
2
700 - The arts; fine & decorative arts
2
025 - Library operations
1
046 - [Unassigned]
1
070 - News media, journalism & publishing
1
150 - Psychology
1
193 - Philosophy of Germany & Austria
1
320 - Political science
1
341 - Law of nations
1
343 - Military, tax, trade & industrial law
1
371 - Schools & their activities; special education
1
378 - Higher education
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
478 - Classical Latin usage
1
510 - Mathematics
1
511 - General principles of mathematics
1
560 - Paleontology; paleozoology
1
600 - Technology
1
616 - Diseases
1
629 - Other branches of engineering
1
659 - Advertising & public relations
1
more ...