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control area : 115 phrases in 20 subjects |
Agriculture | 6 |
Aviation | 38 |
Communications | 2 |
Earth sciences | 1 |
Education | 1 |
Electronics | 1 |
Environment | 4 |
General | 4 |
Law | 1 |
Life sciences | 1 |
Microsoft | 1 |
Military | 1 |
Name of organization | 3 |
Natural resourses and wildlife conservation | 1 |
Nuclear and fusion power | 2 |
Nuclear physics | 1 |
Radio | 1 |
Semiconductors | 1 |
Transport | 33 |
Water resources | 12 |