TETRAHEDRAL INGOT
BAKUMENKO SERGEJ P,SU, MIKHAJLOV ALEKSANDR S,SU, VERKHOVTSEV EMIL V,SU, KOZLOV TIMOFEJ M,SU, SITNIKOV VASILIJ F,SU, SHATUNOV SERGEJ F,SU, ABRAMOV YURIJ V,SU
Year of Publication 25.08.1977
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Year of Publication 25.08.1977
Patent