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April 6, 2020, 12:15 p.m.
chemistry

DGT d and f Block Elements

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April 6, 2020, 12:12 p.m.
chemistry

DGT Chemistry in Everyday Life

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April 6, 2020, 12:08 p.m.
chemistry

DGT Aldehydes Ketones and Carboxylic Acids

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April 6, 2020, 12:07 p.m.
chemistry

DGT Alcohols Phenols and Ethers