Verba,Sidney <br/><br/>
Participation in America   : political democracy and social equality 
/ Sidney Verba, Norman H.Nie 
. - Landon  : The university of chicago press, c1987
. - XXIII-428 p.  ; 23 cm. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0226852962 
<br/><br/><label>Source: </label> Don du CCA 
<br/><br/><label>Universal Decimal Class. No.: </label>321.7.