Yu, Yingshi. <br/><br/>
Trade and expansion in Han China   a stu dy in the structure of Sino-barbarian economic relations /   [electronic resource] : 
by Ying-S hih Yü. 
 - Berkeley :   University of California Press,   c1967. 
 - ix, 251 p. ;   22 cm. 
 - ACLS Humanities E-Book. .
<br/><br/>Includes bibliographical references (p. 221-233) and index. 
<br/><br/><br/> Electronic text and image data. <br/> Ann Arbor, Mich. : <br/> University of Michigan, Michigan Publishing, <br/> 2010. <br/> Includes both TIFF files and keyword searchable text. <br/> ([ACLS Humanities E-Book]) <br/> Mode of a ccess: Intranet. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/> China-- History-- Han dynasty, 202 B.C.-220 A.D.<br/> China-- Foreign economic relations.