Lockheed Corp is looking for a buyer for its world-famous Dialog on-line database service and his been circulating a memo to potential acquirers, reports the Wall Street Journal. But the price is steep: it seems Lockheed wants $200m for a business making profits of $19m on turnover of $100m. Dialog, started in 1972, includes 320 databases and has 80,000 subscribers. The Calabasas, California planemaker says it wants to sell because Dialog is not a core business. Robert Maxwell’s Pergamon is tipped as a potential bidder, as is Mead Corp’s Mead Data Central database service.