DIN EN 772-3:1998-10 Methods of test for masonry units - Part 3: Determination of net volume and percentage of voids of clay masonry units by hydrostatic weighing; German version EN 772-3:1998
1998DIN EN 772-3:1998-10 Methods of test for masonry units - Part 3: Determination of net volume and percentage of voids of clay masonry units by hydrostatic weighing; German version EN 772-3:1998
1998DIN EN 772-3:1998 Methods of test for masonry units - Part 3: Determination of net volume and percentage of voids of clay masonry units by hydrostatic weighing; German version EN 772-3:1998