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Method for calculating the displacement surfaces of the wallrocks during working of a coal seam : Gritsko, G I; Vlasenko, B V Sov Min Sci, V12, N2 March–April 1976, P134-13–9


Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
104 KB
Volume
14
Category
Article
ISSN
0148-9062

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