The Concept of Relativity Theory ~ Revolution in 20th Century Theoretical Physics List Price: ¥ 680 After being read once by a family member, it was carefully stored in a box. Although it is an old book, I believe the condition is very good. There are slight scratches and scuffs, light dirt, and discoloration due to age-related storage. Please check the photos and purchase after understanding the condition. I would be happy if it finds a connection with someone who will read it.