 Complete the following phrase:  Norwich suffered extensive bomb damage during the Second World War, affecting large parts of the old city centre and Victorian terrace housing around the centre. Industry and rail infrastructure also suffered. The heaviest raids occurred on the nights of 2728 and 2930 April 1942; as part of the Baedeker raids; attacks on Bath, Canterbury, Norwich, Exeter, and York using Baedekers series of tourist guides to the British Isles. Norwich became one of the targets of the so-called Baedeker Blitz, which took place in retaliation for the 