000 00280nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _a370
_bVAN
100 _aVanaja, M.
245 0 _aElements of Educational Technology
260 _bNeelkamal
_c2010
300 _a212
942 _cBK
999 _c2894
_d2894