Spectral theory/
Lorch, Edgar R. (Edgar Raymond), 1907-
Spectral theory/ Edgar Raymond Lorch - New York: Oxford University Press, 1962 - 158 p. ; 22 cm. - University texts in the mathematical sciences. .
Spectral theory (Mathematics).
Spectral theory/ Edgar Raymond Lorch - New York: Oxford University Press, 1962 - 158 p. ; 22 cm. - University texts in the mathematical sciences. .
Spectral theory (Mathematics).
