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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 10, pp. 23–24, October, 1971.
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Mitrofanov, M.G., Kutsevalov, V.V. & Karaibog, E.V. Conditions of maintaining the activity of carbamide during repeated use. Chem Technol Fuels Oils 7, 753–754 (1971). https://doi.org/10.1007/BF00716967
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DOI: https://doi.org/10.1007/BF00716967