Eco, Umberto..
The search for the perfect language /
Translated by James Fentress 
. - Oxford; Cambridge : Blackwell,  1997 
. - X, 385 p.  22 cm. 
 - (The making of Europe/ Series editor: Jacques Le Goff). .
<br/>К.: Іл., бібліогр. 
<br/><label>  ISBN: </label>0-631-20510-1