00341nam a2200121Ia 45000030006000000080041000060400015000471000019000622450077000812600032001585460012001900050017002020STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMillikan, R.a.  aElectrons (+ and -) Protons, Photons, Neutrons, Mestrons and Cosmic rays  bUniversity of Chicagoc1947  aEnglish20220125170223.0