 |
| sondagem: 102 phrases in 21 subjects |
| Astronautics | 1 |
| Brazil | 1 |
| Chemistry | 2 |
| Coal | 5 |
| Communications | 13 |
| Construction | 1 |
| Earth sciences | 5 |
| Economy | 1 |
| Electronics | 5 |
| Environment | 9 |
| Finances | 1 |
| General | 7 |
| Information technology | 2 |
| Life sciences | 26 |
| Mathematics | 3 |
| Medical | 3 |
| Natural sciences | 1 |
| Oil / petroleum | 1 |
| Statistics | 11 |
| Technology | 2 |
| Transport | 2 |