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China Petroleum Engineering Corp. engages in the manufacture and sale of oil ... Its products include methyl tert-butyl ether, liquefied petroleum gas, 2-butanone, 2-butanol, hydrogen, nitric ...
WHEN petroleum ether extracts of dried leaf material are passed through Tswett adsorption columns composed of magnesia and siliceous earth, the leaf pigments are adsorbed, and colourless solution ...
Nature - Chromatographic Observations on Nitrogenous Constituents of Petroleum-Ether Extracts of Plasma. Skip to main content. Thank you for visiting nature.com.
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