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