Cross References: BS 6651:1992*BS 7958:1999*BS EN 50132-7 *BS EN 50134-7:1996 BS 405:1987*BS 476*BS 4737-1:1986*BS 4737-2:1987*BS 5051-1:1988*BS 5306-3:1985*BS 5839-1:1988*BS 6132:1983*BS 6133:1995*BS 7042:1988*BS 7858:1996*BS EN 3-1 *BS EN 50131-1*
BS 5979:2000 History
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