00628nam a2200193Ia 4500082002000000100001800020245004900038260004800087300002700135490005400162500005600216500000500272690000600277700000500283952010200288964001700390921001000407999001700417  a515.72bD255.ST  aDavies, E. B.  aSpectral theory and differential operatorsb  aCambridgebCambridge University Pressc1995  aix, 182p. Index, Bibl.  aCambridge studies in Advanced Mathematicsv v. 42  a"Purchased under NBHM grant for the year 1994-1995"  a  a   a  00104070aISIbISId1998-09-18l0o515.72 D255.STpDP22731r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a12258  c12258d12258