(ANSA) - Milan, September 1 - Expo on Tuesday released ticket sales figures showing that 13,784,308 tickets were sold as of August 31, with more than 3.3 million visitors in the month of August alone.
    Since the world's fair opened on May 1, 12.2 million people have visited, and Expo organizers said they estimate ticket sales to reach 20 million by the October 31 closing date.