Stetson, Harlan True,  1885- <br/><br/>
Sunspots in action; 
with a foreword by Sir Edward V. Appleton. 
 - New York :  Ronald Press Co.  [1947] 
 - [2] l., iii-xiv, 252 p.  il.  22 cm. 
 - Humanizing science series .
<br/><br/>bibliografía al final del capítulo. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Meteorology.<br/>Sunspots.<br/>Radio.
<br/><br/><label>Subjects--Index Terms: </label>meteorología  mancha solar 
<br/><br/><label>Universal Decimal Class. No.: </label>523.746