Operational | Navigation
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| environ. | navigácia |
| English thesaurus | |||
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| op; oper; opnl | |||
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Operational : 58 phrases in 15 subjects |
| Accounting | 1 |
| Chemistry | 1 |
| Communications | 4 |
| Economics | 7 |
| Electronics | 2 |
| Finances | 5 |
| Forestry | 1 |
| General | 13 |
| Health care | 1 |
| Immigration and citizenship | 3 |
| Law | 2 |
| Medical | 2 |
| Microsoft | 2 |
| Nuclear and fusion power | 3 |
| Transport | 11 |