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A counteraction of the crumps occurring in coal mine headings by means of supports
A counteraction of the crumps occurring in coal mine headings by means of supports
A counteraction of the crumps occurring in coal mine headings by means of supports
International conference, Geomechanics 96 ; 1996 ; Roznov; Czech Republic
01.01.1997
10 pages
Aufsatz (Konferenz)
Englisch
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