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1. Age in second language acquisition by Harley, Birgit. Publication: San Diego, Calif. : College-Hill Press, 1986 . 1 online resource (xii, 144 pages) Date:1986 Availability: No items available: Actions: Add to cart
2. The Development of second language proficiency /   Publication: Cambridge : Cambridge University P., 1990 . xiv, 248 p. : , Papers prepared for a symposium held at the Ontario Institute for Studies in Education, November 1987. Date:1990 Availability: Copies available: Turkeyen Campus Education & Humanities [P51 D48] (1), Actions: Add to cart