High School Information Processing Textbook This textbook explains digital data compression techniques. - Title: High School Society and Information, Revised Edition - Publisher: Jikkyo Shuppan - ISBN: 978-4-467-20834-4 There is a fold on the upper right of the cover. There are no markings. Other than the fold, the condition is good. Please understand that this is a used item before purchasing. ☆Shipping Method☆ Shipped via Mercari delivery. ☆Other☆ I am busy with work during the day, so it is difficult to respond to messages, and I will mainly be available after 8 PM. I cannot accept price negotiations, but I will answer any questions you have about the product as best I can. Thank you for your understanding. Thank you for viewing.