Kopal Zdenek <br/><br/>
Introduction to the study of eclipsing variables 

 -  1946 
 - p.  cm. 
 - Harvard observatory monograph; 6 .
<br/><br/><label>Standard No.: </label>25485 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stars
<br/><br/><label>Dewey Class. No.: </label>B962:57, H6