00358nam a2200145Ia 450000500170000000800410001704100080005808200150006610000170008124500280009826000410012630000090016765000170017670000190019320250729165333.0250729s2005    xx            000 0 und d  aeng  a372.8 KARD  aKumar Sudhir  aTeaching of Mathematics  aGadagabVidya Nidhi Prakashanac2005  a338p  aEnviournment  aRathnakara D N