DIN EN 772-1:2016-05 Methods of test for masonry units - Part 1: Determination of compressive strength; German and English version EN 772-1:2011+A1:2015
2016DIN EN 772-1:2016-05 Methods of test for masonry units - Part 1: Determination of compressive strength; German and English version EN 772-1:2011+A1:2015
2016DIN EN 772-1:2016 Methods of test for masonry units - Part 1: Determination of compressive strength; German and English version EN 772-1:2011+A1:2015