. . . . "The artificial transmutation of the elements being the thirty-fifth Robert Boyle lecture, delivered before the Oxford university Junior scientific Club on 2nd June 1933" . . . . . . . . . "The artificial transmutation of the elements, being the thirty-fifth Robert Boyle lecture" . "The artificial transmutation of the elements : being the thirty-fifth Robert Boyle Lecture, delivered before the Oxford University Junior Scientific Club on 2nd June 1933" . . .