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Real-time information technology company Telvent has signed a contract with Valladolid City Council for the supply, installation, commissioning and maintenance, over five years, of a Tetra radio communications network for the city of Valladolid in Spain
http://www.southgatearc.org/news/may2005/telvent.htm
http://www.southgatearc.org/news/may2005/telvent.htm