000 00255nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aParameswaran, S
245 0 _aTrigonometry
260 _bViswvasthan
_aMadras
_c1965
650 _aTrigonometry
942 _cBK
999 _c410
_d410