TY  - BOOK
AU  - Vasey, Daniel E
TI  - An ecological history of agriculture : 10,000 B.C.-A.D. 10,000
SN  - 9781557532725
U1  - 630.9 VAS 
PY  - 1992///
CY  - Ames
PB  - Iowa State University Press
KW  - Agricultural ecology
ER  -