Exchange systems in prehistory / 
edited by Timothy K. Earle, Jonathon E. Ericson. 
 - New York :  Academic Press,  c1977. 
 - Studies in archeology .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0122276507 
<br/><br/><label>LCCN: </label>76013933 //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commerce, Prehistoric.
<br/><br/><label>LC Class. No.: </label>GN799.C45  / E95 
<br/><br/><label>Dewey Class. No.: </label>380.1/09/01