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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 7, pp. 8–10, July, 1970.
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Piryatinskii, B.M., Sobolev, B.A., Serebrinskii, L.E. et al. Perfecting operation of an apparatus for two-stage deasphalting of residuum with liquid propane at the Ryazan' refinery. Chem Technol Fuels Oils 6, 488–491 (1970). https://doi.org/10.1007/BF00714008
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DOI: https://doi.org/10.1007/BF00714008