Haeckel, Earnst <br/><br/>
Riddle of the universe 
by Earnst Haeckel; translated by Joseph McCabe 
 - London  Watts  1929 
 - 324p.;20 cm.-- 
 - The thinker's library;No.3 .
<br/><br/> Includes index 
<br/><br/><label>Dewey Class. No.: </label>PC  / 147.3 HAE