TY  - BOOK
AU  - Heady, Earl Orel.
TI  - Economics of agricultural production and resource use
U1  - 338.1 
PY  - 1964/// (c.1952)
CY  - Englewood Cliffs
PB  - Prentice Hall
KW  - Agricultura
KW  - Aspectos económicos
ER  -