DIN EN 1170-4:1998-01 Precast concrete products - Test method for glass-fibre reinforced cement - Part 4: Measuring bending strength; "simplified bending test" method; German version EN 1170-4:1997
1998DIN EN 1170-4:1998-01 Precast concrete products - Test method for glass-fibre reinforced cement - Part 4: Measuring bending strength; "simplified bending test" method; German version EN 1170-4:1997