Frihagen, Jon <br/><br/>
Electron density profiles in ionosphere and exosphere 
Jon Frihagen                                                 
 - Amsterdam  North-Holland  1966 
 - xiv, 625p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Ionosphere
<br/><br/><label>Universal Decimal Class. No.: </label>551.510.5  / FRI