000			003320000a22001330004500
008			140223b1979 xxu||||| |||| 00| 0 eng d
041			_aENG
080			_aB333 L9
082			_aB333 L9
100			_aJOHN (Fritz)
245			_aPartial differential equations Edn.3.
260			_aNew Delhi _bNarosa _c1979
650			_aDIFFERENTIAL
999			_c253862 _d253862