000 00290nam a2200097Ia 4500
008 120229s9999 xx 000 0 und d
082 _a371.3028068 SIN
100 _aSingh, Y.K.
245 _aEducational technology: management and planning
260 _bA.P.H.Publishing
_aNew Delhi
_c2008
999 _c125348
_d125348