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ruthenium 11/22/2017 GFX Definition of the Day

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ruthenium 11/22/2017 GFX Definition #LetsGetWordy #dailygfxdef #ruthenium   Let's Get Wordy!®

ruthenium 11/22/2017 Definition of the Day

ruthenium - #rare #polyvalent #metallic #element of the #platinum group #LetsGetWordy #DailyDef #ruthenium