000 00342nam a22001337a 4500
999 _c4305
_d4305
008 170710b xxu||||| |||| 00| 0 eng d
020 _a9788120337237
082 _a371.33
100 _aMangal, S.K.
245 _aEssentials of educational technology
260 _aNew Delhi
_bPHI Learning
_cc2009
300 _axxiv, 812p. :
942 _2ddc
_cBK