Химия, Металлы, Коррозия металлов (СССР) - ДУСТХИХАБРПРОМ
Химия, Металлы
«Коррозия металлов» - «Школфильм» 1971г. (00:04:12 чёрно-белый)
На экспериментальном материале фрагмент знакомит учащихся с различны...
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