000 00274nam a2200109Ia 4500
100 _aMukhopadhyay, M. (ed)
942 _cBK
245 _aEducational technology : challenging issues
260 _aSterling publishing, New Delhi
_c1990
082 _a371.3 Muk
300 _ax, 225
999 _c58796
_d58796