00423nam a2200145Ia 450000500170000000800460001703700140006304000210007704100130009808400210011110000150013224500730014726000470022030000100026720250508151639.0008  250505s9999    xx            000 0 hin d  aReference  aFEDL bengcFEDL  ahin2hin  a371.3, RYBqFEDL  aRyburn W M 0aProgressive school : A study in methods of education and of teaching  aLondon, UKbOxford University Press c1955  a289p.