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| Ｘ; ｘ; 未知数 (michisū) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| English thesaurus | |||
| |||
| UQU | |||
|
unknown quantity : 2 phrases in 1 subject |
| General | 2 |
| |||
| Ｘ; ｘ; 未知数 (michisū) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| English thesaurus | |||
| |||
| UQU | |||
|
unknown quantity : 2 phrases in 1 subject |
| General | 2 |