A set of English grammar reference books covering from basic to advanced levels. - Title: Seki Masao's English Grammar POLARIS 1 Basic Level - Title: Seki Masao's English Grammar POLARIS 2 Advanced Level - Publisher: KADOKAWA Thank you for viewing. Both books have writing on them, as shown in the 5th photo. They also have warping, folds, and scratches. To prevent any issues, please confirm the condition of the items from the photos before purchasing. Please only purchase if you understand that these are used items. (*_ _)