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dispersão : 280 phrases in 30 subjects |
| Agriculture | 8 |
| Antennas and waveguides | 7 |
| Brazil | 1 |
| Chemistry | 23 |
| Communications | 18 |
| Construction | 1 |
| Earth sciences | 13 |
| Economy | 1 |
| Electronics | 86 |
| Environment | 12 |
| Finances | 2 |
| General | 21 |
| Health care | 2 |
| Industry | 4 |
| Information technology | 9 |
| Law | 1 |
| Life sciences | 12 |
| Mathematics | 9 |
| Mechanic engineering | 5 |
| Medical | 5 |
| Metallurgy | 4 |
| Municipal planning | 2 |
| Natural sciences | 2 |
| Pharmacy and pharmacology | 1 |
| Radio | 1 |
| Satellite communications | 1 |
| Statistics | 25 |
| Technology | 1 |
| Transport | 2 |
| Vacuum tubes | 1 |
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