Mackey, William Francis. Bilingualism as a world problem, E.R. Adair Memorial lectures [electronic resource] / [by] W.F. Mackey.. — [Montreal] : Harvest House, [1967]. — 57, 62 p. 18 cm. Text in English and French. Bibliography: p. 55-56. LCCN: 67030118 Nat. Bib. No.: C*** Subjects--Topical Terms: Bilingualism.Intellect.Tweetaligheid.Bilinguisme.Intelligence. LC Class. No.: BF431 / .M357 Dewey Class. No.: 401