Indo-Iranian phonology with special reference to the middle and new Indo-Iranian languages / Louis H. Gray. Gray, Louis H. (Louis Herbert), 1875-1955. Indo-Iranian languages Phonology. 491.1 GRM New York : Columbia University Press, 1902. 1902. 1902 Text xvii, 264 p. ; eng Columbia University Indo-Iranian series, v. 2 Indo-Iranian series ; v. 2.