Hughes Aircraft Co. of Los Angeles has...

Hughes Aircraft Co. of Los Angeles has purchased the cathode-ray tube manufacturing operation of Thomson Electron Tubes and Devices Corp. of Dover, N.J. The price was not disclosed . . . Time-Life Books Inc., a unit of New York-based Time Inc., said it agreed to purchase Books for Children from Independent Television Publications for an undisclosed price . . . Los Angeles-based Leisure Technology reported that its common and preferred stock began trading on the Pacific Stock Exchange under the symbol LVX.