Classification
070 - News media, journalism & publishing
2
303 - Social processes
2
382 - International commerce
2
384 - Communications; telecommunication
2
658 - General management
2
781 - General principles & musical forms
2
001 - Knowledge
1
025 - Library operations
1
302 - Social interaction
1
323 - Civil & political rights
1
333 - Economics of land & energy
1
338 - Production
1
343 - Military, tax, trade & industrial law
1
346 - Private law
1
362 - Social welfare problems & services
1
660 - Chemical engineering
1