Roy, A. E.  1924-2012. <br/><br/>
Astronomy :   principles and practice / 
A. E. Roy and D. Clarke. 
 - xv, 342 pages :  illustrations ;  29 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: pages 332-333. 
<br/><br/><label>ISBN: </label>0852742924 
<br/><br/><label>LCCN: </label>78307420  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy.
<br/><br/><label>LC Class. No.: </label>QB43.2  / .R68 
<br/><br/><label>Dewey Class. No.: </label>520