These are the textbooks I used for university entrance exams. After studying them once, I stored them at home. For those who haven't grasped the basics of biology, I think it would be easier to understand if you use the problem book and textbook in the photos together. There are no visible writings or stains, but please note that there is a small tear in the packaging. I hope these will be helpful to all examinees. Thank you for looking. #UniversityEntranceExam #Textbook #ProblemBook #BiologyBasics #Biology