00534nam a2200169Ia 4500001000700000003000400007005001700011008004100028040000800069100002600077245006900103250001400172260003400186300001000220650004200230650009200272293363OSt20251020171000.0091118e2007    pr a   jr     000 1 spa    cDLC  aAlemán Rios, Yamira10aDesafío del planeta: manual de actividades /cYamira Alemán.  a1 era ed.  a[ColombiabLa autora]cc2007.  a28 p. 0aNature studyxActivity program2Local 0aEnviromental protectionxStudy and teaching (Early childhood)xActivity program.2Local