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Investigation of rock pressure in thick-bed mining with the use of flexible ceilings
S. I. Zapreev, A. K. Kovrizhin, A. I. NikiforovVolume:
1
Language:
english
Pages:
6
DOI:
10.1007/bf02501957
Date:
May, 1965
File:
PDF, 595 KB
english, 1965