Hynek, J.A. <br/><br/>
Astrophysics  A Topical Symposium. 
Hynek, J.A. 
 - NEW YORK  McGRAW HILL BOOK COMPANY  1951 
 - 703 pages  Commorating the fiftieth anniversary of the yerkes Observatory and a half century of progress in astrophysics. 
<br/><br/><br/>In English 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ASTROPHYSICS
<br/><br/><label>Dewey Class. No.: </label>Nciiia,5  1951