TY  - BOOK
AU  - Heady,Earl
TI  - Economic models and quantitative methods for decisions and planning in agriculture
SN  - 0-8138-0540-6
U1  - 338.1H9 
PY  - 1971///
CY  - U.S.A.
PB  - The Iowa State University Press
KW  - Agrícultura
KW  - Aspectos Economicos
ER  -