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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 8, pp. 35–37, August, 1977.
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Papshev, D.D., Ivanov, Y.V. Use of rolling to increase the service life of the rolling bodies of drill bits. Chem Petrol Eng 13, 737–740 (1977). https://doi.org/10.1007/BF01137296
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DOI: https://doi.org/10.1007/BF01137296