000 00353nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aN.Subrahmanyam
245 0 _aPreface to the seventh Edition
250 _a-
260 _aNew Delhi
260 _bRatan Prakashan Mandir
260 _c0
650 _aPreface to the seventh Edition
942 _cBK
999 _c13509
_d13509