000			00419nam a2200145Ia 4500
008			180713s9999 xx 000 0 und d
082			_a516.24 N1
100			_a"Narayanan, S "
245		0	_aTrigonometry
260			_aMadras
260			_b S Viswanathan
260			_c1967
365			_b100
942			_cBK
999			_c112555 _d112555