By Alfvén, Hannes.
Washington Scientific and Technical Information Office, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1976 .
xii, 599 p. , Includes index.

New York Plenum Press 1977 .
xvi, 416 p. , "Based on the third international colloquium held at the University of Denver, November 5-8, 1974." 0306309408