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Translated from Khimichekoe i Neftyanoe Mashinostroenie, pp. 36–37, No. 12, December, 1970.
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Bashlaev, N.I., Neretin, Y.I. & Tkachenko, G.P. Improving fabricating technology of fractionating tray valves. Chem Petrol Eng 6, 1052–1053 (1970). https://doi.org/10.1007/BF01151644
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DOI: https://doi.org/10.1007/BF01151644