000 00389nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
084 _a516.24 N1
100 _a"Narayanan, S"
245 0 _aTrigonometry
250 _a\\196700ENGGPCX
260 _aS Viswanathan
260 _b1967
260 _cMadras
300 _a284p
500 _aincludes index and biblioraphy
942 _cBK
999 _c100298
_d100298