Have you got a telephone directory? <a href="http://www.doublezerosolutions.co.uk/providersoptimahealthcom-d086.pdf#detain">optimahealth.com</a>  The bulldozing of the tunnels has deepened Gaza residents' feelings of isolation in a tiny coastal territory that many have described as a prison. Egypt has suggested Palestinians have been using the underground passages to help Sinai militants, a charge Hamas rejects.