TY - GEN AU - Eizaga Rebollar, Bárbara A4 - Filología Francesa e Inglesa PY - 2017 UR - http://hdl.handle.net/10498/27688 AB - Description of the main theories that account for how babies acquire their first language, including facts and problems that each of them presents. LA - eng KW - first language acquisition KW - mother tongue TI - First language acquisition ER -