| |||
| 角観測 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
angle measuring : 1 phrases, 1 sujets |
| Technologie | 1 |
| |||
| 角観測 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
angle measuring : 1 phrases, 1 sujets |
| Technologie | 1 |