Reference book specifically for the Class 4 Hazardous Materials Handler (乙4) exam. If you want to pass the 乙4 exam in the shortest time possible, this is definitely recommended. It's a bit old, but there's absolutely no problem. You pass with a 60% correct answer rate, so there's no need to spend a lot of money on the latest edition, which doesn't have much different content. However, if your goal is to pass with a perfect score, please purchase the latest edition. I recommend this text if you want to pass efficiently and in the shortest time possible with good cost performance. As you can see in the photos, there are scratches, markings, and stains, but there is no problem with use. Please note that the memorization notebook is not included (honestly, it's not necessary). - Title: Class 4 Hazardous Materials Handler - Author: Ryota Kiyama - Publisher: Zoshindo/Juken Kenkyusha - Price: List Price: 1,600 yen Thank you for viewing. Thank you for your consideration.