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Evolution of ventilation layout for an excavation section with flexible metal ceilings
A. M. Goryunov, V. I. Klopov, G. I. Kulakov, V. M. MakridinVolume:
28
Language:
english
Pages:
4
DOI:
10.1007/bf00735109
Date:
July, 1992
File:
PDF, 294 KB
english, 1992