Classification
303 - Social processes
658 - General management
169
500 - Natural sciences & mathematics
119
330 - Economics
104
302 - Social interaction
88
338 - Production
61
331 - Labor economics
59
384 - Communications; telecommunication
51
300 - Social sciences
48
006 - Special computer methods
31
381 - Commerce
21
000 - Computer science, information & general works
17
158 - Applied psychology
17
620 - Engineering & allied operations
16
153 - Mental processes & intelligence
15
670 - Manufacturing
12
650 - Management & auxiliary services
11
380 - Commerce, communications & transportation
10
745 - Decorative arts
10
327 - International relations
9
150 - Psychology
8
382 - International commerce
7
001 - Knowledge
6
306 - Culture & institutions
6
155 - Differential & developmental psychology
5
332 - Financial economics
5
305 - Social groups
4
800 - Literature & rhetoric
4
304 - Factors affecting social behavior
3
333 - Economics of land & energy
3
364 - Criminology
3
600 - Technology
3
659 - Advertising & public relations
3
152 - Perception, movement, emotions & drives
2
170 - Ethics
2
301 - Sociology & anthropology
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
2
395 - Etiquette (Manners)
2
808 - Rhetoric & collections of literature
2
004 - Data processing & computer science
1
201 - Religious mythology & social theology
1
307 - Communities
1
322 - Relation of state to organized groups
1
335 - Socialism & related systems
1
337 - International economics
1
341 - Law of nations
1
342 - Constitutional & administrative law
1
345 - Criminal law
1
352 - General considerations of public administration
1
more ...