00850nam0-22002891i-450-99000126710040332120110207193435.0000126710FED01000126710(Aleph)000126710FED0100012671020001205d1971----km-y0itay50------baengPLPartial differential equations of second orderMiroslaw KrzyzanskiWarszawaPWN Polish scientic publishers19712 v.24 cmMonografie matematyczne5354Krzyzanski,Miroslaw492614ITUNINARICAUNIMARCBK990001267100403321C-51-(5312502MA1C-51-(5412503MA1MA1Partial differential equations of second order380171UNINA