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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 7, pp. 25–26, July, 1995.
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Yasashin, V.A., Makarov, N.G., Nazarov, A.M. et al. New design of Sh490T3-TsVR-9 reactive turbodrilling bit. Chem Petrol Eng 31, 375–376 (1995). https://doi.org/10.1007/BF01150282
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DOI: https://doi.org/10.1007/BF01150282