00465nam a2200169Ia 450000500170000000800460001703700290006304000200009204100130011208400230012510000230014824500280017126000480019930000090024736500120025665000270026820250508162057.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDLbengcFEDL  aeng2eng  a510.7, SID/OqFEDL  aSidhu Kulbir Singh 0aTeaching of mathematics  aNew Delhi, IndiabSterling Publishersc1971  a315p  aINRb15  aMathematics - Teaching