Segal, Irving Ezra <br/><br/>
Mathematical cosmology and extra-galactic astronomy 
Irving Ezra Segal 
 - New York  Academic Press  1976 
 - ix,204p.;  23cm.- 
 - Pure and applied mathematics: a series of monographs and text books ; v.68 .
<br/><br/><label>Dewey Class. No.: </label>523.12  / SEG