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Donetsk Department of the Institute of Economics, Academy of Sciences of the UkrainianSSR. Translated from Metallurg, No. 10, p. 31, October, 1968.
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Geifman, R.S. Production and use of economic sectional shapes. Metallurgist 12, 549 (1968). https://doi.org/10.1007/BF00734170
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DOI: https://doi.org/10.1007/BF00734170