"Tokyo University of Science (Faculty of Science and Technology - B Method)" Kyogakusha Editorial Department Price: ¥2300 (¥4600) #KyogakushaEditorialDepartment #Book #Other/Other There are some writings that don't affect solving the problems. If you are concerned, you can erase them with an eraser. I used it carefully with a cover. I will sell it to those who understand that it is a used item.