This 3 book set titled "Die Religion Zarathushtras" by Michael Stausberg is a comprehensive guide on Zoroastrianism. The books cover various aspects of the subject area, including the history, rituals, and beliefs of the religion. The books are in German and were published in 2002 by Kohlhammer Verlag in Germany. The set is suitable for adult and further education, and the educational level is advanced. Books look like new other than a name inside the cover of Book 1. Book 3 has a CD of some sort pasted to the inside front board and the first fly leaf is sticking to it. I think they can be separated with no damage, but I'm not going to try it. See pics for details and feel free to ask questions. Note: This is a new account, but I also sell under the username hawkins844. Please see that account for precious customer feedback. I am trying to build a separate ebay presence with this account in my business's name.