Classification
300 - Social sciences
330 - Economics
333 - Economics of land & energy
4
658 - General management
4
320 - Political science
3
140 - Specific philosophical schools
2
302 - Social interaction
2
338 - Production
2
610 - Medicine & health
2
001 - Knowledge
1
153 - Mental processes & intelligence
1
301 - Sociology & anthropology
1
332 - Financial economics
1
340 - Law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
381 - Commerce
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
670 - Manufacturing
1
900 - History & geography
1