00818nam a2200229Ia 4500001000700000003000600007005001700013008004100030020001500071040001300086082002300099100002800122240008300150245015100233250001100384260003600395300002700431504003900458650002700497650002900524650003500553263117OCoLC20160527192851.0031024s1986    sp       b      1   spa d  a8471120569  aAKRcAKR  a372.7019bL899g6 E1 aLovell, Kenneth.2Local14aThe growth of basic mathematical and scientific concepts in children.lSpanish14aDesarrollo de los conceptos básicos matemáticos y científicos en los niñoscK. Lovell ; versión española de Orencio Sánchez Manzano.  a6a ed.  aMadridbEdiciones Moratac1986.  a213 p.billus.c22 cm.  aIncludes bibliographies and index. 0aNumber concept.2Local 0aChild development2Local 0aConservation Psychology2Local