000 00357nam a2200145Ia 4500
008 230917s9999||||xx |||||||||||||| ||und||
040 _e95842
_aMAIN
041 _aEnglish
082 _a372.358 K96E
100 _aKumar, K L
245 0 _aEducational technology
260 _aNew Delhi
_bNew Age International
_c1997
300 _ax, 337 p.
942 _cBK
999 _c112681
_d112681