Introduction to Political Science Revised Edition by Sai Abe and Katsuro Nakano, University of the Air Textbooks ★ There are pen markings and folded corners on the pages, as shown in the photo. ★ Although it's an old textbook, I believe it can still be used as an introductory text for political science. ★ I have carefully checked the book, but since I am not a professional, I may have missed some scratches or stains. Please purchase only if you understand that this is a used item.