Classification
330 - Economics
299
300 - Social sciences
28
658 - General management
19
338 - Production
4
152 - Perception, movement, emotions & drives
3
302 - Social interaction
3
303 - Social processes
3
384 - Communications; telecommunication
3
170 - Ethics
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
158 - Applied psychology
1
174 - Occupational ethics
1
305 - Social groups
1
331 - Labor economics
1
370 - Education
1
380 - Commerce, communications & transportation
1
381 - Commerce
1
400 - Language
1
500 - Natural sciences & mathematics
1
506 - Organizations & management
1
600 - Technology
1
610 - Medicine & health
1
650 - Management & auxiliary services
1
900 - History & geography
1