1shikari
I've just noticed that a new book by Patricia Crone is just about to be published by Cambridge: The Nativist Prophets of Early Islamic Iran: Rural Revolt and Local Zoroastrianism. One I shall be looking out for!
3timspalding
Apparently >2 tyeb: is asking for books on the Avesta. But, well, that's Google translate. I imagine there's far more in Persian than we would know.
