Sobelman, I. I. 1927- Introduction to the theory of atomic spectra / by I. I. Sobelman. - Oxford : Pergamon Press, 1972. - xvi, 609 p. : ill. ; 26 cm. Translation of Vvedenie v teoriiu atomnykh spektrov. ISBN: 0080161669 Subjects--Topical Terms: Atomic spectroscopy.