The perfect reference book for English study, 3rd Revised Edition. - Title: English Four Weeks - Authors: Akira Matsumoto, Ichiro Hirata - Edition: 3rd Revised Edition - Price: ¥2500 - ISBN: ISBN4-475-01010-2 There is some aging. There is one place with a red line drawn in it. Please consider purchasing if you understand. Thank you for looking.