00871nam a2200253Ia 4500001000700000003000500007005001700012008004100029010001800070020001500088041001300103050002400116082001700140100003900157245011400196260005200310300001700362500006400379500002000443504003000463650006300493650002800556650003300584135879BIBL20191123021129.0910425m19891987sp a     b   000110 spa    abuc91000202    a847509516X0 aspaheng0 aLB1062b.L3518 19890 a370.15/221910aLangford, Peterq(Peter E.)2Local13aEl desarrollo del pensamiento conceptual en la escuela primariacPeter Langford ; translated by Isidro Arias.0 aBarcelona, EspañabEdiciones Paidóscc1989.  a158 p.bill.  aTranslation of : Concept development in the primary scholl.  aIncludes index.  aBibliography: p. 129-154. 0aThought and thinkingxStudy and teaching (Primary).2Local 0aChild psychology2Local 0aCognition in children2Local