00334nam a2200145Ia 4500003000400000005001700004008004100021040000700062041000800069082001500077100001800092245002800110260004100138300000900179OSt20260725114441.0260720s2005    xx            000 0 und d  cAL  aeng  a510.7 KUMT  aKumar, Sudhir  aTeaching of mathematics  aGadagabVidya Nidhi Prakashanac2005  a338p