| |||
| Keythrope system; across-the slope system | |||
|
sistema transversal : 6 phrases in 2 subjects |
| Agriculture | 5 |
| Water resources | 1 |
| |||
| Keythrope system; across-the slope system | |||
|
sistema transversal : 6 phrases in 2 subjects |
| Agriculture | 5 |
| Water resources | 1 |