Copyright by the British Standards InstitutionMon Jul 24 13:49:39 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:10 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:11 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:12 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:12 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:13 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:14 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:14 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:15 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:16 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:17 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:17 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:18 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:18 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:19 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:20 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:20 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:21 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:21 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:22 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:23 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:23 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:24 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:25 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:25 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:26 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:27 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:28 2000

Copyright by the British Standards InstitutionMon Jul 24 13:50:28 2000