The language and thought of the child / Translated by Marjorie Gabain ; pref. by E. Claparede. Langage et la pensee chez l'enfant. English Piaget, Jean, 1896- Child development. Children Language and languages. LB1139.L3 P5 1955 136.7 PIL London : Routledge & Kegan Paul, 1926. 1926. 1926 Text 1 v. eng engfre