000 00277nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _a370.15
_bBHA
100 _a Bhatnagar,Suresh
245 0 _aShiksha Manovigyan
260 _bR.Lall book
_c2007
300 _a599
942 _cBD
999 _c3562
_d3562