TY  - BOOK
AU  - Sorenson, John L. 
TI  - World trade and biological exchanges before 1492
SN  - 9780595524419
U1  - 574.52 SOR 
PY  - 2009///
CY  - Bloomington, IN
PB  -  iUniverse, 
KW  - Biogeography. Commerce -- History
KW  - ,  Travel, Ancient.
KW  - , Culture diffusion
KW  - , Plant remains (Archaeology).
KW  - , Commerce, Prehistoric
KW  - , Archive
ER  -