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| 1 | national organization | 国立機関 | |||
| 2 | experimental research in pollution control by national research institute | 国立機関公害防止等試験研究 | |||
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|---|---|---|---|---|---|
| 1 | national organization | 国立機関 | |||
| 2 | experimental research in pollution control by national research institute | 国立機関公害防止等試験研究 | |||