TY  - BOOK
AU  - Heady,Earl O.
AU  - Dillon,John
TI  - Agricultural production functions
T2  - Fotocopia
U1  - 338.1 
PY  - 0000///19??
CY  - Iowa
PB  - Iowa State University
KW  - Agricultura
KW  - Aspectos económicos
N1  - AREA DE POSGRADO C.5
ER  -