Gray, Louis Herbert, 1875-1955. Introduction to Semitic comparative linguistics : a basical grammar of the Semitic languages / Louis H. Gray. - Philo Press : Amsterdam, 1971. - xvi, 147 p. ; 23 cm. - Columbia University studies in comparative linguistics, 1. . Reprint of the New York, 1934, ed. Bibliography : p. 119-139. ISBN: 9060222725 Subjects--Topical Terms: Semitic languages--Grammar, Comparative.