000 00291nam a2200121Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
082 _a515.35
082 _bCHA/P
100 _ap.n
_bchatterji
245 0 _apartial differential equations
260 _brajhans prakashan mandir
260 _c1994
999 _c9402
_d9402