00776nam0-22002651i-450-990001313790403321000131379FED01000131379(Aleph)000131379FED0100013137920000920d1961----km-y0itay50------baengIntroduction to partial differential equationsBYGREENSPAN D.New York [etc.]McGraw-Hill1961International series in pure and applied mathematicsGreenspan,Donald12697ITUNINARICAUNIMARCBK99000131379040332118-E-103974MA1MA1Introduction to partial differential equations382742UNINAING01