|
frequence : 25 phrases in 12 subjects |
| Automated equipment | 1 |
| Electronics | 4 |
| General | 8 |
| Gyroscopes | 1 |
| Information technology | 1 |
| Librarianship | 1 |
| Mass media | 2 |
| Medical appliances | 2 |
| Music | 1 |
| Natural resourses and wildlife conservation | 1 |
| Programming | 2 |
| Radioengineering | 1 |