Folkestad, Kristen <br/><br/>
Ionospheric Radio Communications 
/ by Kristen Folkestad 
 - New York:  Plenum Press:  1968. 
 - xi, 468p.; 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>621.384  / FOL/I