This is a chemistry problem book essential for university entrance exams, containing 142 basic problems. Please refer to the table of contents in the photos for the content. The inside is unused and there are no markings, but as you can see in the photos, the帯 (obi, paper band) is folded and torn. For those who understand that this is a used item, thank you. - Title: Chemistry Introduction Problem Seikou (Mastery) - Author: Masaaki Kamata, Kensaku Hashiya - Genre: Chemistry - Features: The definitive introductory book for university entrance exams - Contents: 142 essential basic problems you should definitely solve Thank you for looking.