Symposium held in Stockholm, 1956 <br/><br/>
Electromagnetic phenomena in cosmical physics   
ed. by B. Lehnert 
 - Cambridge  Cambridge University Press  1958 
 - xiii, 545p. 
 - International astronomical union symposium No.6 .
<br/><br/><label>Dewey Class. No.: </label>523.01  / N581