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Q-system of tunnel support design used for underground production excavations : Kersten, R W O Proc of the Symposium on Rock Mass Characterization, Randburg, South Africa, 8 Nov 1985 P39–42 Publ South Africa: ISRM, 1985


Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
114 KB
Volume
23
Category
Article
ISSN
0148-9062

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