Wentzel, Donat G. <br/><br/>
The restless sun 
Donat G. Wentzel                                             
 - Washington  Smithsonian Institution Press  1989 
 - xiii, 279p. 
 - Smithsonian library of solar system .
<br/><br/><label>ISBN: </label>0-87474-982-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Solar Physics<br/>Sun
<br/><br/><label>Universal Decimal Class. No.: </label>523.9  / WEN