000 00285nam a2200121Ia 4500
008 220201s1994 xx 000 0 eng d
082 _a621.381
_bDAG
100 _aDag, S.D.
245 0 _aPrarambhik electronic
260 _aDelhi
_bDelhi CBS Pub.
_c1994
300 _a234
942 _2ddc
999 _c34579
_d34579