00562nam a22002057a 4500003000400000005001700004008004100021020002200062037001300084040002000097041001300117082001700130100001800147245007100165260004600236300001600282365001600298650002600314700001600340OSt20260226151101.0260226b        |||||||| |||| 00| 0 eng d  a978-81-203-3723-7  cTextbook  aFEDLbengcFEDL  aengheng  a371.39 MAN/R  aMangal, S. K.  aEssentials of educational technology/cby S. K. Mangal; Uma Mangal  aDelhibPHI Learning Private Limitedc2025  axxiv, 812p.  aINRb950.00  aEDUCATION- TECHNOLOGY  aMangal, Uma