This is a set of three items: a problem book and answer/explanation sheets specifically for math and Japanese language in preparation for junior high school entrance exams. - Title: Junior High School Entrance Exam Practice Problem Book - Problem Section - Subjects: Math, Japanese Language - Title: Junior High School Entrance Exam Practice Problem Book - Answer Sheet Section - Subjects: Math, Japanese Language - Series: Rinkai Seminar - Target Audience: Junior High School Entrance Exam Course There are no markings as far as I could see, but there is some wear and tear on the cover. Thank you for looking.