Classification
302 - Social interaction
658 - General management
101
330 - Economics
98
300 - Social sciences
94
500 - Natural sciences & mathematics
53
670 - Manufacturing
51
170 - Ethics
30
331 - Labor economics
23
384 - Communications; telecommunication
16
338 - Production
15
158 - Applied psychology
13
381 - Commerce
11
650 - Management & auxiliary services
10
155 - Differential & developmental psychology
9
174 - Occupational ethics
9
380 - Commerce, communications & transportation
6
620 - Engineering & allied operations
6
000 - Computer science, information & general works
4
153 - Mental processes & intelligence
4
006 - Special computer methods
3
150 - Psychology
3
303 - Social processes
3
770 - Photography, photographs & computer art
3
001 - Knowledge
2
004 - Data processing & computer science
2
304 - Factors affecting social behavior
2
332 - Financial economics
2
659 - Advertising & public relations
2
005 - Computer programming, programs & data
1
070 - News media, journalism & publishing
1
175 - Ethics of recreation & leisure
1
177 - Ethics of social relations
1
179 - Other ethical norms
1
305 - Social groups
1
351 - Public administration
1
363 - Other social problems & services
1
364 - Criminology
1
368 - Insurance
1
610 - Medicine & health
1
745 - Decorative arts
1
778 - Fields & kinds of photography
1
800 - Literature & rhetoric
1