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Additional information
Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 10, p. 42, October, 1969.
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Shelkov, V.K. Rare metals in chemical machine construction in the USA. Chem Petrol Eng 5, 830–831 (1969). https://doi.org/10.1007/BF01153189
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DOI: https://doi.org/10.1007/BF01153189