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Yieldable roof support for mines : Herbst, T F Rock Mechanics Contributions and Challenges: Proc 31st US Symposium, Golden, 18–20 June 1990P807–814. Publ Rotterdam:A A Balkema, 1990


Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
103 KB
Volume
29
Category
Article
ISSN
0148-9062

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