Classification
374 - Adult education
005 - Computer programming, programs & data
698
331 - Labor economics
592
004 - Data processing & computer science
458
658 - General management
283
384 - Communications; telecommunication
198
000 - Computer science, information & general works
182
500 - Natural sciences & mathematics
165
620 - Engineering & allied operations
149
330 - Economics
69
006 - Special computer methods
58
621 - Applied physics
31
745 - Decorative arts
31
610 - Medicine & health
19
657 - Accounting
13
381 - Commerce
11
670 - Manufacturing
11
338 - Production
10
302 - Social interaction
9
300 - Social sciences
7
519 - Probabilities & applied mathematics
7
332 - Financial economics
6
510 - Mathematics
6
600 - Technology
6
700 - The arts; fine & decorative arts
4
355 - Military science
3
368 - Insurance
3
371 - Schools & their activities; special education
3
629 - Other branches of engineering
3
650 - Management & auxiliary services
3
794 - Indoor games of skill
3
011 - Bibliographies
2
364 - Criminology
2
686 - Printing & related activities
2
741 - Drawing & drawings
2
770 - Photography, photographs & computer art
2
777 - [Unassigned]
2
001 - Knowledge
1
150 - Psychology
1
158 - Applied psychology
1
170 - Ethics
1
193 - Philosophy of Germany & Austria
1
342 - Constitutional & administrative law
1
343 - Military, tax, trade & industrial law
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
370 - Education
1
615 - Pharmacology & therapeutics
1
651 - Office services
1
696 - Utilities
1
more ...