Contents: vol.1. The land of Iran (xix, 784p.)/edited by W.B. Fisher - vol.2. The Median and Achaemenian Periods (xvii, 946p.)/edited by Ilya Gershevitch - vol.4. The Period from the Arab Invasion to the Saljuqs (xiii, 734p.)/edited by R.N. Frye - vol.5. The Saljuq and Mongol Periods (xiii, 763p.)/edited by J. A. Boyle - vol.6. The Timurid and Safavid Periods (xv, 1087p.)/edited by Peter Jackson