000			00284nam a2200133Ia 4500
008			190216s9999||||xx |||||||||||||| ||und||
100			_aNarayanan. S
245		0	_aTrigonometry
250			_a1st Ed.
260			_bNull _c1986
300			_a175
650			_aMathematics
942			_cBK
999			_c31011 _d31011