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METHOD OF ERECTING YIELDING ROOF SUPPORT ON MONOLITHIC CONCRETE
METHOD OF ERECTING YIELDING ROOF SUPPORT ON MONOLITHIC CONCRETE
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机译:在单层混凝土上建立屋面支护的方法
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摘要
method of construction of putty supports of monolithic concrete, including the installation of опалубки, заливку concrete mixture and formation of cavities in a monolithic lining along the develop, от
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