The logic of collective action;  public goods and the theory of groups 
[by] Mancur Olson, Jr.  
 - Cambridge, Mass.,  Harvard University Press  1965.  
 - x, 176 p  22 cm. 
<br/><br/>Bibliographical footnotes.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social groups.<br/>Social interaction.
<br/><br/><label>LC Class. No.: </label>HM131  / .O55