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Multilingual Matters
> David M. Singleton
David M. Singleton
title
ISBN-13
(ISBN-10)
year of publica-
tion
other author(s)
Language Acquisition: The Age Factor
978-1-85359-757-2
(1-85359-757-O)
2004
Lisa Ryan
D. M.
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D S
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David M.
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David S.
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David Singleton
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M S.
David M. Skapura