Yotsuya Otsuka Yosyu Series Science, Grade 5, Lower Semester Textbook, Answer Key, and Explanations 〈Textbook〉 Minor scratches and wear on the corners. I erased the pencil markings with an eraser, but there are a few pages with pen markings, so I'm offering it at a lower price. 〈Answer Key and Explanations〉 There are folds and stains. All the answer sheets are included. This item has been used by a child and shows signs of use. Please understand this before purchasing.