TY  - BOOK
AU  - Heady, Earl O
AU  - Dillon, John L
TI  - Agricultural production functions 
SN  - 8170961297
U1  - 338.1  
PY  - 1988///
CY  - New Delhi
PB  - Kalyani Publishers, 
KW  -  Economics
KW  - Agriculture
KW  - Economic aspects
ER  -