Text ( visual ) : unmediated The penetration of charged particles through matter (1912-1954) / edited by Jens Thorsen. -- Amsterdam ; Tokyo : North-Holland , 1987. -- xix, 838 p. : ill., ports. ; 27 cm. -- (Collected works / Niels Bohr ; general editor, L. Rosenfeld ; v. 8). -- Text in English and Danish ; Includes bibliographical references and index. -- ISBN 0444870032 ; (BA01399521) ; https://ci.nii.ac.jp/ncid/BA01399521 Author Heading(s): Bohr, Niels Henrik David ; Thorsen, Jens. -- Subject Heading(s): FREE : Nuclear physics