Abell, George O. <br/><br/>
Realm of the Universe 
George O. Abell 
 - New York  Holt Rinehart  c1973 
 - x,431p.;  24cm. 
<br/><br/> Previous title: Exploration of the Universe 
<br/><br/><label>Dewey Class. No.: </label>520  /  ABE