This is the official Eco-Test practice problem book (2024 edition). I only used the digital drill, so the paper problem book is unused. Although it's unused, there are small scratches and folds on the book cover from when it was delivered by mail, so please purchase only if you don't mind. "2024 Edition Environmental Society Certification Test Eco-Test Official Problem Book" Tokyo Chamber of Commerce and Industry Price: ¥2200 #TokyoChamberOfCommerceAndIndustry #book #civilengineering/architecture/civilengineering