Russell, Bertrand  (1872-1970) <br/><br/>
Our knowledge of the external world  [Texte imprimé] / 
Bertrand Russel 
 - London:  G. Allen and Unwin,  1980 
<br/><br/><label>ISBN: </label>0-04-121008-5 
<br/><br/><label>Dewey Class. No.: </label>121