Сварка и резка металлов с применением газов-заменителей ацетилена

Сварка и резка металлов с применением газов-заменителей ацетилена

180 Pages · 2016 · 6.65 MB · Russian
by Гаврилов П.И.
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“ I want to sing like the birds sing, not worrying about who hears or what they think. ” ― Rumi
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