000 00288nam a2200121Ia 4500
100 _aSampath,K. Others
942 _cBK
245 _aIntroduction to educational technology
260 _aNew Delhi
_bSterling Publ
_c1984
082 _a371.3
_bSam
300 _aviii,282
546 _aEnglish
999 _c337670
_d337670
041 _aeng