● Title Case Problem Notebook: Training Problem-Solving Skills, Written by a University of Tokyo Student: With 50 Carefully Selected Frameworks, Any Difficult Problem Can Be Clearly "Mapped" ● ISBN-10 4492556737 ● Condition Good: There is some yellowing and wear, but it is at a level that does not affect use. ● Remarks I handle and store the item with care, but please understand that it is a used item before purchasing.