"Thoroughly Conquer Difficult Science Problems: Mathematics I・A・II・B・III" Toru Yasuda Price: ¥1300 #ToruYasuda #Toru_Yasuda #Book #Nature/Mathematics This is a reference book used by my child. I've taken a quick look, and I don't think there are any markings, but because they have a habit of writing dates and making check marks, there might be a few faint pencil marks in a few places. I apologize if I missed anything. There are some minor scratches on the cover, but otherwise, it seems to be in good condition overall. Please understand that this is a used item before purchasing.