Pettengill,John S. <br/><br/>
Labor unions and the inequality of earned income 
/ John S.Pettengill 
. - Amsterdam  : North Holland publishing company, 1980
. - x-336 p.  ; 23 cm. 
 - Contributions to economic analysis  129 .
<br/><br/>Bibliogr,index 
<br/><br/><label>ISBN: </label>0444854096 
<br/><br/><label>Source: </label> don  
<br/><br/><label>Universal Decimal Class. No.: </label>331.88.