Cairns, Robert B. <br/><br/>
Social developement  The origins and plasticity of interchanges 

 - San Francisco  W. H. Freeman & Company  1979 
 - 438  Hb 
<br/><br/><label>ISBN: </label>0-7167-0195-2 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>301.15