000 00267nam a2200121Ia 4500
008 210212s9999 xx 000 0 und d
040 _crty
100 _aGupta ,R.L. and gupta v.k
245 0 _aVitiya lekhankan
260 _aNew delhi
300 _a2007
942 _cBB
999 _c9057
_d9057