Lipson E. <br/><br/>
Europe in the XIXth & XX th centuries : 1815 - 1939 

 - 8th 
 - New Delhi, India  Allied Publishers Ltd.  1984 
 - 504p. 
<br/><br/><br/>C.S.E.C 
<br/><br/><label>Source: </label>Textual