British Standards Document
BS EN 520
Gypsum plasterboards. Definitions, requirements and test methods
https://doi.org/10.3403/03158236U
BS EN 520 is maintained by B/544. The current release of this standard is:
BS EN 520:2004+A1:2009 Gypsum plasterboards. Definitions, requirements and test methods
https://doi.org/10.3403/03158236 (published 22/11/2004)
This standard is available from the following sources:
Other historical versions of this standard document also exist: