"New Revised Edition: Sustainable Management Support (Ministry of the Environment Certified Decarbonization Advisor Basic) Exam Study Guide" Keizai Horei Kenkyukai / Keizai Horei Kenkyukai / Hiroshi Nishihara Price: ¥2000 I read it once and then stored it at home. Please understand that it has been stored at home. Instant purchase is welcome.