000 00289nam a2200121Ia 4500
100 _aSampath,K.
942 _cBK
245 _aIntroduction to educational technology
260 _aNew Delhi
_bSterling Pub Pvt. Ltd
_c1981
082 _a371.3
_bSam
300 _aviii,293
546 _aEnglish
999 _c337666
_d337666
041 _aeng