000 00270nam a2200121Ia 4500
008 211209s1983 xx 000 0 und d
041 _aeng
082 _a516.24BAL
100 _aBALI, N P
245 _aTRIGONOMETRY
260 _bLAXMI PUBLICATION
_c1983
300 _a126
999 _c22198
_d22198