000 00319nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c140
040 _aET
100 _aSIDDIQUI YADAV
245 0 _aTEACHER OF SCIENCE
260 _bAGARWAL BOOK DEPO
_aNEW DELHI
300 _a288
500 _a66248
942 _cBK
999 _c72211
_d72211