Металлы и их свойства.Лекция по материаловедению
Материаловедение.Доступно и понятно.С примерами и пояснениями.
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![Vince DiCola - War [Rocky IV] (Metal cover)](https://sun9-20.userapi.com/1EiVQz4DjOrfitu9pgcMW3kkg7s4qoHcBWWvFA/EgVc7uJiHlA.jpg)
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