Hortmann, William K. <br/><br/>
Astronomy, the cosmic journey.   
William K. Hortmann. 
 - 3rd 
 - Belmomt  Wadsworth  1987 
 - xxiii, 548p 
<br/><br/><label>ISBN: </label>0534079385 
<br/><br/><label>Dewey Class. No.: </label>520  / N871