Astronomical observations: astronomy and the study of deep space 
edited by Erik Gregersen                                       
 - New York  Britannica  2010 
 - 214p. 
<br/><br/><label>ISBN: </label>978-161530-025-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomical instruments-Popular works<br/>Astronomy-Observations-Popular works<br/>Astronomy-Popular works
<br/><br/><label>Universal Decimal Class. No.: </label>520.8  / AST