| |||
| bister; flue sweat; bistre | |||
| mordant, water stain | |||
|
bistre : 4 phrases in 3 subjects |
| Chemistry | 2 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |
| |||
| bister; flue sweat; bistre | |||
| mordant, water stain | |||
|
bistre : 4 phrases in 3 subjects |
| Chemistry | 2 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |