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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 7, pp. 36–38, July, 1975.
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Ped'kin, B.V., Makarov, A.G., Nosov, A.P. et al. Repairing a carbamide-synthesis column. Chem Petrol Eng 11, 656–658 (1975). https://doi.org/10.1007/BF01162899
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DOI: https://doi.org/10.1007/BF01162899