✨ Best Answer ✨
http://www.jamstec.go.jp/res/ress/nakadar/findings/Isotope/isotope.html
ここに書いてます
✨ Best Answer ✨
http://www.jamstec.go.jp/res/ress/nakadar/findings/Isotope/isotope.html
ここに書いてます
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