000 00303nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Narayan, S. & Manikavasagam pillay, T.K."
245 0 _aSupplement to Trigonometry
260 _bS.Viswanathan
260 _c1971
365 _b1.00
942 _cBK
999 _c137672
_d137672