00336nam a2200145Ia 4500003000400000005001700004008004100021040000700062041000800069082001500077100002400092245002800116260003700144300000900181OSt20260727111442.0260720s2006    xx            000 0 und d  cAL  aeng  a510.7 SIDT  aSidhu, Kulbir Singh  aTeaching of mathematics  aAgrabVinod Piustak Mandirc2006  a519p