Organic Chemistry Exercises Shun Ishikawa Price: ¥1100 Used this during university entrance exams. I think it's full of good, challenging problems for those who are good at determining organic chemistry structures. Also, in terms of difficulty, it's recommended for those whose universities have difficult chemistry, or those who want to score well in chemistry. I think beginners should avoid it. #ShunIshikawa #Shun_Ishikawa #book #nature/chemistry