Lothian, G. F. Absorption spectrophotometry / G. F. Lothian. - 2d ed. - London : Hilger & Watts, 1958 - vi, 246 p. : ill. ; 23 cm. Includes bibliography and Indexes Subjects--Topical Terms: Absorption spectra.Spectrophotometry. Dewey Class. No.: 535.3 / LOA 1958