TY  - BOOK
AU  - Sauer, Jonathan D
TI  - Historical geography of crop plants: A select roster
U1  - 024.214583 
PY  - 1993///
CY  - London
PB  - CRC
KW  - Crop history
KW  - Euphorbiaceae
KW  - Hevea
KW  - Manihot
ER  -