Kopal, Zdenek <br/><br/>
Close binary systems 
Zdenek Kopal                                                
 - London  Chapman and Hall  1959 
 - xiv, 558p. 
 - International astrophysics series; v. 5 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Close binary stars<br/>Contact binary stars
<br/><br/><label>Universal Decimal Class. No.: </label>524.387  / KOP