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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 6, pp. 30–31, June, 1968.
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Mamedov, S.R., Sanadze, M.L. Some problems in the casting of blow-out preventer bodies. Chem Petrol Eng 4, 502–503 (1968). https://doi.org/10.1007/BF01139375
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DOI: https://doi.org/10.1007/BF01139375