v. 1. The land of Iran, edited by W. B. Fisher.--v. 2. The Median and Achaemenian periods, edited by Ilya Gershevitch.--v. 3. The Seleucid, Parthian, and Sasanian periods, edited by Ehsan Yarshater (2 pts.).--v. 4. The period from the Arab invasion to the Saljuqs.--v. 5. The Saljuq and Mongol periods, edited by J. A. Boyle.--v. 6. The Timurid and Safavid periods, edited by Peter Jackson and Laurence Lockhart.--v. 7. From Nadir Shah to the Islamic Republic, edited by Peter Avery, Gavin Hambly, and Charles Melville