000 00302nam a2200121Ia 4500
008 160930s9999 xx 000 0 und d
020 _a8170247233
100 _aVenkataish, N.
245 _aEducational Technology
260 _aNew Delhi
_bAPH Pub. Corporation
300 _axvii,234p.;22cm
942 _cBK
999 _c4568
_d4568