000 00263nam a2200109Ia 4500
008 201201s9999 xx 000 0 und d
082 _a516.24
100 _aVARMA, R.S.
245 0 _aTEXT BOOK ON TRIGNOMETRY
260 _bALLAHABAD, POTHISHALA
_c1957
942 _cOB
999 _c16549
_d16549