Zeilik, Michael <br/><br/>
Introductory astronomy and astrophysics 
Michael Zeilik and Stephen A. Gregory                                            
 - 4th ed. 
 - Philadelphia  Saunders Publishing  1998 
 - xv, 515p. 
<br/><br/><label>ISBN: </label>0-03-006228-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astrophysics
<br/><br/><label>Universal Decimal Class. No.: </label>52  / ZEI