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| chemical operation | |||
| protection against thermal radiation; anti-CW protection; chemical defense; warfare defense | |||
| защита от химического оружия: 25 phrases in 6 subjects |
| Foreign affairs | 3 |
| Makarov | 1 |
| Military | 13 |
| Navy | 1 |
| Security systems | 6 |
| Weapons of mass destruction | 1 |