000 00283nam a2200121Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
082 _a515.35
082 _bCHA/D
100 _ap.n
_bchatterji
245 0 _adifferential equations
260 _brajhans prakashan mandir
260 _c1962
999 _c6244
_d6244