000 00319nam a2200145Ia 4500
003 LDD
040 _cLDD
082 _a516.24 D26H
100 _aDas, B.C
245 0 _aHigher trigonometry
_cB.C Das
260 _aCalcutta
_bU.N. Dhur & Sons
_c1919
300 _axvi, 288p
901 _a14957
_b16-01-2017
942 _2ddc
_cG
999 _c2254
_d2254