000 00270nam a2200109Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
100 _aSimmons, George,
245 0 _aDifferential Equations
260 _aNew Delhi
_bTata Mc Graw
_c2007
942 _cGB
999 _c31252
_d31252