BS EN 771-1:2003
Specification for masonry units. Clay masonry units
https://doi.org/10.3403/02898967 (published 29/09/2003)
BS EN 771-1:2003 is maintained by B/519/1. This standard is available from the following sources:
Other historical versions of this standard document also exist:
- BS EN 771-1:2011 [current until 31/03/2016]