Youth of the xxi century   Realities and perspectiv 

 - New  York UN        2004 
 - 314p  cm. 
<br/><br/><label>Standard No.: </label>143441 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"Y12.5.P, P4/UN"