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онлайн курсы b672o

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this course green chemistry consists of 4 parts including introduction to green chemistry, green nanomaterials, green technologies in environmental protection, [url=https://www.synthonia.com/index.php?option=com_k2&view=itemlist&task=user&id=621449]https://www.synthonia.com/index.php?option=com_k2&view=itemlist&task=user&id=621449[/url] and unconventional chemical processes.

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