A practical book for improving problem-solving skills. - Title: Train Your "Jidoryoku" (Thinking Ability) - Author: Isao Hosoya - Price: Regular price 1000 yen + tax - ISBN: 978-4-295-57716-5 This is a casual inspection, so I haven't checked every detail. Please understand that there may be oversights. Also, as this is a used item, I strongly recommend that those who are sensitive to such things refrain from purchasing. Thank you for looking.