"University Entrance Exam Problem Collection: Kaoru Sakata's Organic Chemistry Polaris [1 Standard Level]" Kaoru Sakata Price: ¥1450 Instant purchase OK/No comments needed. If you'd like, please take a look at my profile. I plan to list many reference books, clothes, and stationery from now on, so feel free to follow me. #KaoruSakata #Kaoru_Sakata #book #nature/chemistry