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Copyright by the British Standards Institution Mon Jul 24 14:13:38 2000 Copyright by the British Standards Institution Mon Jul 24 14:14:04 2000 ? Copyright by the British Standards Institution Mon Jul 24 14:14:04 2000 ? Copyright by the British Standards Institution Mon Jul 24 14:14:05 2000 ? Copyright by the British Standards Institution Mon Jul 24 14:14:06 2000 ? Copyright by the British Standards Institution Mon Jul 24 14:14:07 2000 ? Copyright by the British Standards Institution Mon Jul 24 14:14:08 2000