 |
| |||
| test | |||
| examination; assaying | |||
| experiment | |||
| proof | |||
| trial and error (empirische Methode) | |||
| checking | |||
| Erprobungs: 11 phrases in 8 subjects |
| Coal | 1 |
| Construction | 2 |
| Economy | 3 |
| Electric motors | 1 |
| Foreign trade | 1 |
| General | 1 |
| Optics branch of physics | 1 |
| Quality control and standards | 1 |