000 00276nam a2200109Ia 4500
008 201009s9999 xx 000 0 und d
100 _aDhoomchok,Poonam
245 0 _aPartial Differential equation
260 _b New Delhi,Jeevansons
_c2018
300 _c N
942 _cBK
999 _c16073
_d16073