00631nam a2200193Ia 4500082002000000100002500020245002200045260004400067300001600111490004500127500000500172690000600177700000500183952010100188952010400289964001700393921001000410999001700420  a515.72bL865.ST  aLorch, Edgar Raymond  aSpectral theoryb  aNew YorkbOxford University Pressc1962  a157p. Index  aUniversity texts in mathematical science  a  a   a  001040718RaISIbISId1998-11-17l0o515.72 L865.STpR84r2019-02-14 00:00:00w2019-02-14yBK  001040718GRaISIbISId1998-11-17l0o515.72 L865.STpG1592r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a17959  c17959d17959