TY  - BOOK
AU  - Heady, Eral O
AU  - Dillon, Jhon L.
TI  - Agricultural production functions
SN  - 8170961297
U1  - 338.1 H 432 A 
PY  - 2006///
CY  - New Delhi
PB  - Kalyani
KW  - Agricultural
ER  -