1. A summary review of the scientific findings of the Mariner Venus mission

   • Charles P. Sonett

   OriginalPaper Pages: 751 - 777

2. Some results obtained from the study of cosmic rays and radiation belts with Soviet satellites and space rockets

   • V. L. Ginzburg
   • L. V. Kurnosova
   • M. I. Fradkin

   OriginalPaper Pages: 778 - 861

3. Hydromagnetics of the magnetosphere

   • H. Alfvén

   OriginalPaper Pages: 862 - 870

4. Book reviews

   • F. Jaarsma
   • J. Veldkamp
   • C De Jager

   BookReview Pages: 871 - 873