Ichiro Tani, *The Principles of Flight* (February 10, 1967, 3rd printing, Iwanami Shinsho) With obi and glassine paper cover. The glassine paper is lightly glued to the main body and cannot be removed. Label removal mark and a small red number stamp on the top of the last page. Writing on the final endpaper. Pen writing on some pages. Besides the photos, there are underlines on several pages. Overall, there is age-related deterioration, but I think it can be used as a reference. Will be shipped via Smart Letter.