000 00336nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aS.Narayanana
245 0 _aTrigonometry
250 _a9th Ed
260 _aChennai
260 _bS.Vishwanathan Printers & Publishers
260 _c1986
650 _aTrigonometry
942 _cBK
999 _c13920
_d13920