① Yasuo Okamoto, "Current Management Organization," 1982, 8th printing, Nikkei Bunko. The cover has scratches, and the book is generally yellowed. Inside, almost all pages have underlining and marking in ballpoint pen and yellow colored pencil. There is also some writing. ② Kozo Nishida, "Japanese Management and Job Satisfaction," 1978, Nikkei Shinsho. The cover has scratches and stains. The inside is generally yellowed. There is underlining in pencil and ballpoint pen. There is also some marking and underlining in yellow colored pencil. ③ Kimio Miyakawa, "Introduction to OR," 1981, 12th edition, 7th printing, Nikkei Bunko. The cover has scratches and stains. The inside is generally yellowed, but there is no writing or underlining. We are looking forward to your purchase, understanding that these are used books. Shipping will be on Monday and Thursday nights of each week, so it may take up to 5 days depending on the order. Please understand.