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1Bilbo : Universidad del País Vasco, Servicio Editorial = Euskal Herriko Unibertsitatea, Argitalpen Zerbitzua , 2015Libro
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2
Publicado en: Generative perspectives on language acquisition : empirical findings, theoretical considerations and crosslinguistic comparisons / edited by Harald Clahsen , Amsterdam ; Philadelphia : Jon Benjamins Publishing Company, [1996], p. 201-240