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METHOD OF THERMALLY INSULATING OUTER BUILDING WALLS WITH THREE-LAYER FACING AND INSULATING BOARDS, THREE-LAYER FACING AND INSULATING BOARDS AS SUCH AND FASTENING ELEMENT FOR SUCH BOARDS
METHOD OF THERMALLY INSULATING OUTER BUILDING WALLS WITH THREE-LAYER FACING AND INSULATING BOARDS, THREE-LAYER FACING AND INSULATING BOARDS AS SUCH AND FASTENING ELEMENT FOR SUCH BOARDS