00297nam a2200121Ia 450000500170000000800410001704100080005808200150006610000170008124500280009826000400012630000090016620260720174820.0260720s2013    xx            000 0 und d  aeng  a510.7 MANT  aMangal S.K .  aTeaching of Mathematics  aLudhiyanabTandon Publicationc2013  a572p