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Il'ich Zhdanov Plant. All-Union correspondence Mechanical Engineering Institute. Translated from Metallurg, No. 7, p. 40, July, 1973
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Ermakov, V.V., Getiya, I.G., Reznikov, S.A. et al. Increase of the quality of the taper thread of casings. Metallurgist 17, 522–523 (1973). https://doi.org/10.1007/BF01094165
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DOI: https://doi.org/10.1007/BF01094165