TY  - BOOK
AU  - Burns,John Joseph
TI  - The Management of risk: social factors in the development of exchange relations among the rubber traders of North Sumatra 
PY  - 1978///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Rubber industry and trade
KW  - Indonesia
KW  - Sumatra
KW  - Risk management
N1  - Thesis (Ph.D.) - Yale University, 1977
ER  -