Astrophysics on the threshold of the 21st century / 
edited by N. S. Kardashev 
 - Philadelphia :  Gordon and Breach Science Pub.,  1992 
 - 379 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>2881248179 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrophysics<br/>Astronomy