000 00286nam a2200121Ia 4500
008 140317s9999 xx 000 0 und d
082 _a500
100 _aSharma, Shyamsunder
245 _a51 vigyan model.
260 _aNew Delhi
_bVidya vihar
_c2006
300 _a131
942 _2ddc
_cBK
999 _c16158
_d16158