00807nam a2200205 a 450000500170000000800410001702000150005803500150007305000210008810000270010924501480013626000470028430000110033149000300034265000630037265000520043565000470048770000180053483000490055220260817172807.0200227s1996    waua    r     000 0 eng d  a082133672x  a.b1233656700aLB3409 D48bD45 1 aDel Rosso, Joy Miller.10aClass action :bimproving school performance in the developing world through better health and nutrition /c Joy Miller Del Rosso, Tonia Marek.  aWashington, D.C. :bThe world bank, c1996  a54 p. 1 aDirections in development 0aSchool childrenxHealth and hygienezDeveloping countries. 0aMalnutrition in childrenzDeveloping countries. 0aChildrenxNutritionzDeveloping countries.1 aMarek, Tonia.  aDirections in development (Washington, D.C.)