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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 8, p. 40, August, 1977.
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Varfolomeev, A.N., Fel'dshtein, G.L. & Khrushké, I.S. Well pump aggregates for work at 60 Hz. Chem Petrol Eng 13, 747–748 (1977). https://doi.org/10.1007/BF01137302
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DOI: https://doi.org/10.1007/BF01137302