 |
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| vědeckotechnický pokrok | |||
|
scientific and technical progress : 8 phrases in 3 subjects |
| Environment | 1 |
| General | 3 |
| Politics | 4 |
|
| |||
| vědeckotechnický pokrok | |||
|
scientific and technical progress : 8 phrases in 3 subjects |
| Environment | 1 |
| General | 3 |
| Politics | 4 |