 |
| |||
| puceron du peuplier (Pemphigus); puceron de la betterave à sucre Pemphigus betae (Doane) | |||
| poplar aphid: 16 phrases in 3 subjects |
| Entomology | 13 |
| Natural resourses and wildlife conservation | 2 |
| Natural sciences | 1 |
|
| |||
| puceron du peuplier (Pemphigus); puceron de la betterave à sucre Pemphigus betae (Doane) | |||
| poplar aphid: 16 phrases in 3 subjects |
| Entomology | 13 |
| Natural resourses and wildlife conservation | 2 |
| Natural sciences | 1 |