The box has age-related yellowing on the spine, while the main body and text are in acceptable condition for their age. There are no issues with readability. Recommended for those who don't mind and intend to use it for reference. Contents: 363 pages. Volume 11 provides a detailed explanation of the history of Japanese diplomacy. Topics include: Negotiations between Japan and China in 1915, Japan's negotiations with Britain and the United States in 1915, the Yuan Shikai monarchy issue, China's participation in the war, and the issue of the unification of North and South China, among others.