01099nam a2200313 i 450099100136398970753620020507192119.0940204s1971 ne ||| | eng 0444101098b1083719x-39ule_instLE01311133ExLDip.to Matematicaeng512.2AMS 35PAMS 35P05QA329.2.A45Schechter, Martin13643Spectra of partial differential operators /Martin SchechterAmsterdam :North-Holland,1971xiii, 310 p. ;23 cm.North Holland series in probability and applied mathematics ;14Partial differential operatorsSpectral theory.b1083719x23-02-1728-06-02991001363989707536LE013 35P SCH11 (1971)12013000085982le013-E0.00-l- 01010.i1094687128-06-02Spectra of Partial Differential Operators118448UNISALENTOle01301-01-94ma -engne 01