Method of manufacturing a transparent body having a predetermined opacity gradient
BERIEV; GEORGY M, VESNITSKAYA; GALINA S, VASILCHENKO; VIKTOR L, MARKINA; EMMA F, KLITSOV; ALEXANDR A, KOVTUN; ALEXANDR T, GUDIMOV; MATVEI M, GERASIMOVA; ELENA M, KORJUKIN; ALEXANDR V
Year of Publication 10.04.1979
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Year of Publication 10.04.1979
Patent