000 00311nam a2200133Ia 4500
100 _aMukhopadhyay .M
365 _bRS . 200 /-
942 _cBK
654 _a
245 _aEducational Technology Challenging Issues
260 _aNew Delhi
_bSterling Publishers
_c1990
082 _a371. 394
300 _c22 cm
999 _c408032
_d408032
041 _aeng