Campbell Leon <br/><br/>
Story of variable stars 

 -  1947 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>25685 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy
<br/><br/><label>Dewey Class. No.: </label>B96:6, H7