The Cambridge History of Iran - Google Books

https://books.google.de/books?id=hvx9jq_2L3EC&hl=de&source=gbs_navlinks_s

Volume 4 is a survey of every aspect of the civilisations which flourished in the Iranian region from the Arab conquests to the Saljuq expansion: in particular, it studies the gradual transition of Iran from Zoroastrianism to Islam, the uniting of all…