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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 39–41, April, 1970.
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Danielyan, A.A. Azerbaidzhan Scientific-Research Institute for Petroleum Engineering. Chem Petrol Eng 6, 340–343 (1970). https://doi.org/10.1007/BF01137329
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DOI: https://doi.org/10.1007/BF01137329