Zdenek Kopal <br/><br/>
Close Binary Systems 
Zdenek Kopal 
 - London Chapman and Hall Ltd.  Chapman and Hall Ltd.  1959 
 - 558 p, 
<br/><br/><label>Subjects--Topical Terms: </label><br/>astronomy--Binary System
<br/><br/><label>Subjects--Index Terms: </label>Binary System 
<br/><br/><label>Dewey Class. No.: </label>B1301K74f425