000 00270nam a22001217a 4500
008 181210b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a510
100 _a37
101 _aMAT
245 _aPartial Differential Equations
_cHans.F.W
942 _2udc
_cBK
999 _c53125
_d53125