00455nam a2200133Ia 450000500170000000800460001703700120006304000210007504100130009608400230010924500860013226000900021830000130030820250508163452.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a304.607, UNEqFEDL 0aPopulation education in mathematics : Some sample lessons for the secondary level  aBangkok, ThailandbUNESCO Regional Office for Education in Asia and the Pacificc1984  aiii,23p.