Aschenbach, B. <br/><br/>
The invisible sky :  ROSAT and the age of X-ray astronomy / 
Bernd Aschenbach, Hermann-Michael Hahn, Joachim Trümper ; Transl. by Helmut Jenkner. 
 - New York :  Copernicus,  1998. 
 - 175 p. :  ill. (some col.) ;  25 x 29 cm. 
<br/><br/> Translation of: Der unsichtbare Himmel.  Includes index. 
<br/><br/><label>ISBN: </label>0387949283 (alk. paper) 
<br/><br/><label>Subjects--Corporate Names: </label><br/>ROSAT (Artificial satellite)
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-ray astronomy
<br/><br/><label>Dewey Class. No.: </label>522/.6863