Culhane, J. Leonard. <br/><br/>
X-ray astronomy / 
J. Leonard Culhane and Peter W. Sanford. 
 - New York :  Scribner,  c1981. 
 - 192 p. : ill. 
<br/><br/> Includes bibliography and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-ray astronomy