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Search keyword：(Author: #Birdsong David)
Advances in Romance linguistics / David Birdsong and Jean-Pierre Montreuil, eds
: Bound,: Paper. - Dordrecht : Foris Pub. , 1988
(Publications in language sciences ; 28)
Second language acquisition and the critical period hypothesis / edited by David Birdsong
Mahwah, N.J. : L. Erlbuam Associates , 1999
(Second language acquisition research : theoretical and methodological issues / Susan M. Gass, Jacquelyn Schac[h]ter, series editors)