000 00269nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aThakur, K.R.
245 0 _aEducational Development And Technolgy
260 _aNew Delhi
_bSPH
_c2010
300 _a258p.
942 _cBK
999 _c12015
_d12015