000 00277nam a2200109Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
082 _a515.35PIA:E
245 0 _aElementry treatiseon differential equations
260 _aBombay
_bOrient
_c1970
942 _cGB
999 _c30343
_d30343