Detailed research book on Nakajima Aircraft. - Title: Research on Nakajima Aircraft - Author: Yasutaka Takahashi - Publisher: Nihon Keizai Hyoronsha - Price: 2575 yen Thank you for viewing. The item has few noticeable scratches or stains and is in relatively good condition, but as shown in photos 5 and 6, there is some age-related discoloration on the inside of the cover, so please be aware of this if you are concerned.