Arny, Thomas T. <br/><br/>
Explorations:  an introduction to astronomy 

 - 3rd ed. 
 - Boston  McGraw-Hill-Higher education  2004 
 - xix, 586p. 
<br/><br/> includes CD-ROM 
<br/><br/><label>ISBN: </label>0-07-246570-0 
<br/><br/><label>Subjects--Index Terms: </label>Astronomy 
<br/><br/><label>Universal Decimal Class. No.: </label>52  / ARN