01:32DiscoveryEast Germany - Carl Zeiss - A State Within A StateBBC World Service Duration: 27 minutes Thu 12th Nov 2009, 01:32 on BBC World Service OnlineAvailable for over a yearListen nowThe story of German partition and reunification through one of the country's most prestigious companies, Carl Zeiss.GenresFactualScience & NatureFormatsDocumentariesBrandDiscovery Source: BBC Online