00297nam a2200109Ia 4500008004100000020001800041082001500059100001800074245005000092260003700142300000800179190710s9999    xx            000 0 und d  a81-7541-155-4  a155.4 Ag38  aAggarwal, J C 0aChild development and the process of learning  aDelhibShipra Publicationsc2004  a225