000 00314nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c150
040 _aET
100 _aChawla G.S.
245 0 _aMathematics
260 _bGate Academy Publication
_aBhilai
300 _a6.45
500 _a55267
942 _cBK
999 _c61280
_d61280