Olson, Mancur. <br/><br/>
The logic of collective action;  public goods and the theory of groups. 

 - Cambridge, Mass.,  Harvard University Press  [1971] 
 - x, 186 p.  22 cm. 
 - Harvard economic studies,  v. 124 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0674537505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social groups.<br/>Social interaction.
<br/><br/><label>Dewey Class. No.: </label>172.1