Persia’s Imperial Power in Late Antiquity: The Great Wall of Gorgān and Frontier Landscapes of Sasanian Iran. By Eberhard W. Sauer; Hamid Omrani Rekavandi; Tony J. Wilkinson; and Jebrael Nokandeh. JASPA. 2018;138(2):420–422. doi:10.7817/jameroriesoci.138.2.0420