 |
| observations: 14 phrases in 8 subjects |
| Abbreviation | 5 |
| Aeronautics | 1 |
| Ecology | 1 |
| Education | 1 |
| Electronics | 1 |
| Environment | 2 |
| Meteorology | 1 |
| Obsolete / dated | 2 |
|
| observations: 14 phrases in 8 subjects |
| Abbreviation | 5 |
| Aeronautics | 1 |
| Ecology | 1 |
| Education | 1 |
| Electronics | 1 |
| Environment | 2 |
| Meteorology | 1 |
| Obsolete / dated | 2 |