An image of Johan Gadolin, the discoverer of yttrium oxide
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Johan Gadolin was a finnish chemist, physicist, and mineralogist. He discovered the element...
naon Yttrium is an element that's symbol is Y and has the number 39. It is a silver metallic...
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|current||23:39, July 24, 2009||422 × 512 (22 KB)||Dser (wall | contribs)||An image of Johan Gadolin, the discoverer of yttrium oxide|
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