Lado, Robert, 1915- Language teaching, a scientific approach. - New York, McGraw-Hill [c1964] - xiv, 239 p. diagrs. 23 cm. Bibliography: p. 223-229. LCCN: 63021002 Subjects--Topical Terms: Languages, Modern--Study and teaching. LC Class. No.: P51 / .L3 Dewey Class. No.: 407