Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing - Determination of water vapour transmission properties; German version EN 1931:2000
German title
Abdichtungsbahnen - Bitumen-, Kunststoff und Elastomerbahnen für Dachabdichtungen - Bestimmung der Wasserdampfdurchlässigkeit; Deutsche Fassung EN 1931:2000
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