Strutt, R.J. . The Becquerel Rays and the Properties of Radium / Textual Documents R.J.Strutt. - 2nd ed. / - London : Edward Arnold , 1906. - 215p. ; 22cm. Subjects--Index Terms: Chemistry Radium Becquerel Rays G-Chemistry Dewey Class. No.: 546.432 / St 89 B