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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 5, pp, 6–7, May, 1975.
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Dzhafarov, S.T., Éfendiev, O.I. & Perevezentsev, L.V. Apparatus for single-channel differentiated separate water injection into two tiers of one oil well. Chem Petrol Eng 11, 398–399 (1975). https://doi.org/10.1007/BF01151984
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DOI: https://doi.org/10.1007/BF01151984