Thank you for viewing. This is a set of 8 reference books used for studying for the High School Equivalency Exam. Subjects include (Geography, World History, Japanese Language, English, Mathematics, Biology, and Science). Recommended for those considering taking the exam. Condition: Some wear and tear There may be some writing and highlighting, but it does not interfere with studying. Please refrain from purchasing if you are sensitive to items stored at home. Only those who understand that these are used items, please! Individual sales are possible, and immediate purchase is OK! When purchasing, please be sure to check the product description. If you have any concerns, please ask in the comments before purchasing.