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Additional information
Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 30–31, April, 1985.
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Gasanov, A.P. Determination of the optimum parameters of grabs with spiral grips. Chem Petrol Eng 21, 190–193 (1985). https://doi.org/10.1007/BF01148106
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DOI: https://doi.org/10.1007/BF01148106