Whiffen, D. H. Spectroscopy / by D.H. Whiffen. - London : Longmans, 1966 [impression 1968]. - vii, 205 p. : tables, diagrs. 23 cm. Includes index. Bibliography: p. 187-191. Subjects--Topical Terms: Spectrum analysis. Dewey Class. No.: 535.84 / WHS 1968