TY  - BOOK
AU  - Yu,Ying-shih
TI  - Trade and expansion in Han China: a study in the structure of Sino-barbarian economic relations 
U1  - 931 
PY  - 1967///
CY  - Berkeley, Calif
PB  - University of California Press
KW  - China
KW  - History
KW  - Han dynasty, 202 B. C.-220 A. D
KW  - Foreign economic relations
N1  - Includes bibliographical references and index
ER  -