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File:Particle concentration Tokyo Osaka and Japanese national average.png

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日本語: 日本における粒子状物質の濃度のグラフ。東京（国設東京大気汚染測定所:東京都新宿区）、大阪（国設大阪大気汚染測定所:大阪市東成区）、および国内多数地点の平均値。

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current14:23, 6 April 2014Thumbnail for version as of 14:23, 6 April 2014981 × 644 (63 KB)Pekachu (talk | contribs)User created page with UploadWizard

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