| Approximation abbr. | |
| stat. | approximation |
|
Poisson : 71 phrases in 12 subjects |
| Agriculture | 1 |
| Communications | 3 |
| General | 2 |
| Mathematics | 32 |
| Metallurgy | 1 |
| Pharmacy and pharmacology | 1 |
| Physics | 1 |
| Scientific | 1 |
| Statistics | 25 |
| Technology | 1 |
| Telecommunications | 2 |
| Textile industry | 1 |