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safety- first : 21 phrases in 14 subjects |
Aviation | 1 |
Electronics | 1 |
Finances | 1 |
General | 4 |
Geology | 1 |
Investment | 1 |
Makarov | 1 |
Mass media | 1 |
Power system protection | 1 |
Programming | 1 |
Technology | 1 |
Transport | 1 |
Weapons of mass destruction | 5 |
Wood processing | 1 |