170 - Ethics 300 - Social sciences 320 - Political science 2 330 - Economics 650 - Management & auxiliary services 657 - Accounting 140 - Specific philosophical schools 1 340 - Law 1 361 - Social problems & social welfare in general 1 363 - Other social problems & services 1 370 - Education 1 380 - Commerce, communications & transportation 1 600 - Technology 1 610 - Medicine & health 1 658 - General management 1