000 00500nam a22002057a 4500
003 BUL
005 20221213123517.0
008 221213b |||||||| |||| 00| 0 eng d
020 _cRs.
040 _aBUL
082 _a516.24
_bDAS'N33
100 _aDas, B. C.
245 _aHigher trigonometry
_cby B. C. Das and B. N. Mukherjee
250 _a18th ed
260 _aCalcutta
_bU.N. Dhur
_c[1993]
300 _axvi, 272p.
650 _aTrigonometry
700 _aMukherjee, B. N.
942 _cBOOK
999 _c5894
_d5894