Electron density profiles in the ionosphere and exosphere / 
Edited by B.MA.Ehlum. 
 - Oxford:  Symposium publications division,  1962. 
 - 418p;24cm 
 - Nano conference series .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>978112345671118 
<br/><br/><label>Dewey Class. No.: </label>551.5103 MAE