 |
| |||
| bilateral variable area track; bilateral variable sound track; double-edged variable width track; double-edged variable sound track | |||
| двусторонняя фонограмма переменной ширины: 5 phrases in 1 subject |
| Mass media | 5 |
|
| |||
| bilateral variable area track; bilateral variable sound track; double-edged variable width track; double-edged variable sound track | |||
| двусторонняя фонограмма переменной ширины: 5 phrases in 1 subject |
| Mass media | 5 |