Search for: [Abstract = "Unaesthetic stains and deposits often form on external facades \(especially those facing the north\) in places where barriers were installed on them. Such places include, for example\: fragments of facades in which external window sills were mounted, canopies, downspouts, boxes, advertising billboards, flags holders, lightning conductors, aerials as well as facade steps, and many others."]

Number of results: 1