Kawaijuku's Certified Psychologist/Clinical Psychologist Graduate School Entrance Exam Preparation, 4-book set. Psychology Edition, Graduate School Exam Practice Edition, Psychological Statistics Edition, Research Proposal Edition Thank you for viewing. Upon inspection, there are likely no markings. There is a feeling of use as I studied quite a bit, so please purchase only if you understand. I was able to pass a psychology graduate program with these. There is no English edition, but my English preparation was only with the "Psychology Graduate School Vocabulary" book, which I am selling separately. I hope this is helpful! We will ship with waterproof packaging. There may not be any cushioning material. ☆When purchasing, please take a look at my profile☆