Astronomy and astrophysics :  space science in the twenty-first century :  imperatives for the decades 1995 to 2015 / 
Task Group on Astronomy and Astrophysics, National Research Council 
 - Washington, D. C.  National Academy Press  1988 
 - 72 p. ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astrophysics