,  <br/><br/>
The World of Learning 1980-81  -2 Vol.Set 

 - 31st ed.  
 - London  Europa Publications Limited  1980 
 - 1096p 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>0905118529     0 
<br/><br/><label>Dewey Class. No.: </label>M64  / W893