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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 8, p. 31, August, 1979.
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Petrov, Y.P. An impact wrench for tightening nuts in large orifice valves. Chem Petrol Eng 15, 628 (1979). https://doi.org/10.1007/BF01174845
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DOI: https://doi.org/10.1007/BF01174845