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| 1 | cover material | 被覆材料 | |||
| 2 | cover material | 保護材料 | |||
| 3 | cover material | 覆土材 | |||
| 4 | White Paper on the Environment and the Sound Material-Cycle Society Cover Page Illustration Contest | 環境・循環型社会白書表紙絵コンクール | |||
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|---|---|---|---|---|---|
| 1 | cover material | 被覆材料 | |||
| 2 | cover material | 保護材料 | |||
| 3 | cover material | 覆土材 | |||
| 4 | White Paper on the Environment and the Sound Material-Cycle Society Cover Page Illustration Contest | 環境・循環型社会白書表紙絵コンクール | |||
