Smart, W. M.  1889- <br/><br/>
The riddle of the universe / 
W. M. Smart. 
 - Harlow :  Longmans,  c1968. 
 - x, 228 p. :  9 plates, illus. (incl. 1 col.) ;  23 cm. 
<br/><br/>Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy--Popular works.
<br/><br/><label>Dewey Class. No.: </label>520  / SMR 1968