Gupta, S L, et al. Elements of spectroscopy / Gupta, S L, et al. - 7 ed. - Pragati Prakashan, Meerut, 1989 - p. ; 22 cm. Subjects--Topical Terms: Molecular spectroscopy; Nuclear structure; Atomic and Nuclear physics Dewey Class. No.: 539.744 GUP.P-E7