Levy,David H.and O`Byrne,Dr John. <br/><br/>
Skywatching. 

 - London     Harper collins publishers   
 - 288p. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy
<br/><br/><label>Dewey Class. No.: </label>523.1 LEV