Jenkins, Ron, 1932- Practical X-ray spectrometry [by] R. Jenkins [and] J. L. de Vries - 2nd ed. - London Macmillan 1970 - x, 190 p. (2 fold.), 2 plates illus 24 cm. - Philips technical library . Subjects--Topical Terms: X-ray spectroscopy Dewey Class. No.: 544 / .66