000 00283nam a2200109Ia 4500
008 211214s9999 xx 000 0 und d
100 _aAggarwal, J. C. and Ansari, M. S.
245 _aEducational Technology and Management
260 _bAgrawal
_c2014
300 _a614
942 _cBK
999 _c101973
_d101973