00495nam a22001697a 450000500170000001000260001702000250004303500130006803500140008103700090009508200080010424500580011226000750017027000420024530000220028765000160030920250106164452.0  aENG-100093 ENG-143163  a9788174509895c85.00  aEN-83625  aEN-126695  bDBAD  a510  aLaboratory manual in mathematics at secondary stage /  aNew DelhibNational Council of Educational Research and Trainingc2009  aSri Aurobindo MargbNew Delhie110016  a203p.c25cm (pbk)  aMathematics