About This File
Коган Григорий Ефимович
Ручная дуговая сварка металлов: [учебное пособие для курсов инструкторов по внедрению в народное хозяйство передовых методов сварки и наплавки металлов] / Г.Е. Коган. – Москва: Профтехиздат, 1961. – 384 с.: ил.: 0.69.
Edited by Александр О_О
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