Вскрытие и подготовка рудных месторождений при подземной разработке

Вскрытие и подготовка рудных месторождений при подземной разработке

102 Pages · 2016 · 14.24 MB · Russian
by Хоменко О.Е. & Кононенко М.Н.
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“ Pretending to not be afraid is as good as actually not being afraid. ” ― David Letterman
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