00358nam a22001337a 450000500170000000800410001702000180005804000130007608200200008910000160010924500630012526000250018830000110021320161216160853.0161216b        xxu||||| |||| 00| 0 eng d  a9788131754290  cPK-LaUMT  a371.3944bPAT-E  aPathak, R.P  aEducational technologycR.P. Pathak and Jagdeesh chaudhary  aDelhibPearsonc2012  a269 p.