| |||
| 角観測 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
angle measuring : 1 phrase in 1 subject |
| Technology | 1 |
| |||
| 角観測 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
angle measuring : 1 phrase in 1 subject |
| Technology | 1 |