Sawyer, Ralph A. Experimental spectroscopy / Ralph A. Sawyer. - 2nd ed. - New York, Prentice-Hall, c 1951. - x, 358 p. : ill. ; 23 cm. Includes index 336 336 Subjects--Topical Terms: Physicochemistry. Theoretical spectroscopy. Spectroscopic techniques. Dewey Class. No.: 535.8 / S99e