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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 7, pp. 4–6, July, 1979.
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Mokrenko, I.P. Along the steps of progress. Chem Petrol Eng 15, 489–492 (1979). https://doi.org/10.1007/BF01175362
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DOI: https://doi.org/10.1007/BF01175362