Challenges to astronomy and astrophysics 
Astronomy Survey Committee                                   
 - Washington  National Academy Press  1983 
 - xxii, 272p. 
<br/><br/><label>ISBN: </label>0-309-03335-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astronomy and astrophysics thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>52:524  / ASC