| 330 |
Economics in general |
| 331 |
Labour. Employment. Work. Labour economics.
Organization of labour |
| 332 |
Regional economics. Territorial economics.
Land economics. Housing economics |
| 334 |
Forms of organization and cooperation
in economy |
| 336 |
Finance |
| 338 |
Economic situation. Trade cycle. Development
of economic structure. Growth |
| 339 |
Trade. Commerce. International economic
relations. World economy |