"Language development and individual differences : a study of auxiliary verb learning / Brian J. Richards, 1990. - . - LCNA (CD OCLC), 1993-03. - . -"@fr . "1993-10-26" . . "VIAF" . . "Brian J. Richards"@fr . . "2013-07-26" . . . "2013-07-26"^^ . . . . . . . . "Linguiste. - En poste à la Faculty of education and community studies, University of Reading, GB (en 1990)"@fr . "Linguiste. - En poste à la Faculty of education and community studies, University of Reading, GB (en 1990)" . . "12344092"^^ . "Richards" . . . "Brian J." . . "Linguiste. - En poste à la Faculty of education and community studies, University of Reading, GB (en 1990)" . "Brian J. Richards" . . . . . . . . . . "0000000116870498" . . . .