| |||
| puits à drains rayonnants | |||
| puits horizontal | |||
| |||
| puits filtrant horizontal; puits radial | |||
|
horizontal well : 2 phrases in 1 subject |
| Natural resourses and wildlife conservation | 2 |
| |||
| puits à drains rayonnants | |||
| puits horizontal | |||
| |||
| puits filtrant horizontal; puits radial | |||
|
horizontal well : 2 phrases in 1 subject |
| Natural resourses and wildlife conservation | 2 |