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|---|---|---|---|---|---|
| 1 | lakes and reservoirs | 湖沼 | |||
| 2 | measure against eutrophication in lakes, reservoirs, and sea areas | 湖沼及び海域の富栄養化対策 | |||
| 3 | survey of artificial modification of shore-line of lakes and reservoirs | 湖沼改変状況調査 | |||
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|---|---|---|---|---|---|
| 1 | lakes and reservoirs | 湖沼 | |||
| 2 | measure against eutrophication in lakes, reservoirs, and sea areas | 湖沼及び海域の富栄養化対策 | |||
| 3 | survey of artificial modification of shore-line of lakes and reservoirs | 湖沼改変状況調査 | |||