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| single density (записи) | |||
| SD; single density (записи информации Bricker) | |||
| одинарная плотность: 25 phrases in 10 subjects |
| Astronautics | 1 |
| Aviation | 1 |
| Computer networks | 1 |
| Computers | 2 |
| Electronics | 5 |
| Information technology | 10 |
| Makarov | 1 |
| Mass media | 2 |
| Mathematics | 1 |
| Telecommunications | 1 |