Time-Sharing System The book has stains and blemishes on the cover and surface, and is old, so the overall condition is poor, but there are no markings inside. When purchasing, please check the condition of the book carefully in the attached images before considering. - Author: R.W. Watson - Translator: Hideo Aiso - Series Name: Computer Science Research Series 22 - Publisher: Japan Computer Association - Price: 6,000 yen Thank you for viewing.