Trade union membership / 
[by] Keith Hindell. 
 - [London] :  P.E.P.,  1962. 
 - Political and Economic Planning. Planning ;  v. 28, no. 463 .
 - Political and Economic Planning. Planning ;  Political and Economic Planning. Planning ;  v. 28, no. 463 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trade-unions -- Great Britain.--Trade-unions -- Great Britain.