Media type: E-Article Title: Rien n'est jamais acquis : Ou de la permanence de l'objet... de polémiques : Ou de la permanence de l'objet... de polémiques Contributor: Lécuyer, Roger imprint: CAIRN, 2001 Published in: Enfance Language: French DOI: 10.3917/enf.531.0035 ISSN: 0013-7545; 1969-6981 Keywords: Arts and Humanities (miscellaneous) ; Developmental and Educational Psychology ; Education ; Health (social science) ; Pediatrics, Perinatology and Child Health Origination: Footnote: Access State: Open Access