TY  - BOOK
AU  - Heady, Earl L
AU  - Dillon, John L
TI  - Agricultural production functions
SN  - 8170961297
U1  - 631 H345A 
PY  - 2012///
CY  - New Delhi
PB  - Kalyani publishers
KW  - Agricultural-production
KW  - Agriculture
ER  -