000 00256nam a2200121Ia 4500
008 190719s9999 xx 000 0 und d
100 _aBansi Lal
245 0 _aPlane Trignometry
250 _a16th
260 _aDelhi
_bAtmaram
650 _aMath
942 _cBK
999 _c379
_d379