Harlan True Stetson <br/><br/>
Sunspots in Action 
Harlan True Stetson 
 - New York  The Ronald Press Company  1947 
 - 252 p.diagr.phot.spec. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrophysics--Sunspot
<br/><br/><label>Subjects--Index Terms: </label>Sunspot 
<br/><br/><label>Dewey Class. No.: </label>B804S82f360