Methods of test for masonry units - Part 7: Determination of water absorption of clay masonry damp proof course units by boiling water; German version EN 772-7:1998— 5 стр.
91.100.15 Mineral. Including earth, sands, clay, slates, stones, etc. / Минеральные материалы и изделия. Включая землю, песок, глину, шифер, камень, кирпич и т.д.
