000 00295nam a2200109Ia 4500
008 220421s1997 xx 000 0 und d
041 _aeng
082 _a370.3028
_bKUM/EDU
100 _aKumar K.L.
_9571752
245 _aEducational Technology
260 _aNew Delhi
_b New Age International
_c1997
999 _c398015
_d398015