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Copyright by the British Standards Institution Fri Nov 23 10:15:34 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:41 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:42 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:43 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:44 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:44 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:45 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:46 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:46 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:47 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:48 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:48 2012 Copyright by the British Standards Institution Fri Nov 23 10:15:49 2012