Elwell, W. T. Atomic-absorption spectrophotometry / by W. T. Elwell and J. A. F. Gidley. - 2nd rev. ed. - Oxford : Pergamon Press, 1966. - xii, 138 p. : ill. - International series of monographs in analytical chemistr y, v. 6 . Subjects--Topical Terms: Atomic absorption spectroscopy.