00509nam a2200169 a 450000500170000002000180001708200190003510000250005424500280007926000470010730000250015469000330017996400160021299700190022899900190024795200730026620251203111504.0  a9788120717473  a371.90447bSID  aSidhu, Kulbir singh.  aTeaching of mathematics  aNew DelhibSterling Publishersc1967-R2008  avii,413p.c18cm.cPB  aTeaching methods-mathematics  bcdefg_  a157026 LIBSS C  c127752d127752  00104070aPUbPUd2009-12-18g148.00l0o371.90447 SIDp157026yBK