Klapp, Orrin E. <br/><br/>
Currents of unrest : an introduction to collective behaviour 
Orrin E. Klapp 
 - New York  Holt, rinheart and winston  c1972 
 - xii, 413p.; 24cm. 
<br/><br/><label>Dewey Class. No.: </label>301.15  / KLA