Eklund, Sigvard Studies in nuclear physics : excitation by means of X-rays; activ ity of 87 Rb. / Sigvard Eklund. - Uppsala : Almquist & Wiksell, 1946. - 79 p. : ill. ; 22 cm. - Arkiv f:or matematik, astronomi och fysik ; bd. 33 A, n:o 14 . Inaugural disscussion- Uppsala. Subjects--Topical Terms: X-rays.Rubidium. Dewey Class. No.: P 539.7 E34