Byzantium's last imperial offensive in Asia Minor : the documentary evidence for and hagiographical lore about John III Ducas Vatatzes' crusade against the Turks, 1222 or 1225 to 1...

von Langdon, John Springer, 1942-
Hellenism--ancient, mediaeval, modern ; 7th v.
New Rochelle, N.Y. : A.D. Caratzas, c1992.
Umfang/Format: viii, 156 p., [9] p. of plates (1 folded) : ill., map ; 24 cm.